ipr.c revision 117d2ce1cea25fc94302ff418ccef644cd3e59af
1/* 2 * ipr.c -- driver for IBM Power Linux RAID adapters 3 * 4 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation 5 * 6 * Copyright (C) 2003, 2004 IBM Corporation 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 21 * 22 */ 23 24/* 25 * Notes: 26 * 27 * This driver is used to control the following SCSI adapters: 28 * 29 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B 30 * 31 * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter 32 * PCI-X Dual Channel Ultra 320 SCSI Adapter 33 * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card 34 * Embedded SCSI adapter on p615 and p655 systems 35 * 36 * Supported Hardware Features: 37 * - Ultra 320 SCSI controller 38 * - PCI-X host interface 39 * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine 40 * - Non-Volatile Write Cache 41 * - Supports attachment of non-RAID disks, tape, and optical devices 42 * - RAID Levels 0, 5, 10 43 * - Hot spare 44 * - Background Parity Checking 45 * - Background Data Scrubbing 46 * - Ability to increase the capacity of an existing RAID 5 disk array 47 * by adding disks 48 * 49 * Driver Features: 50 * - Tagged command queuing 51 * - Adapter microcode download 52 * - PCI hot plug 53 * - SCSI device hot plug 54 * 55 */ 56 57#include <linux/fs.h> 58#include <linux/init.h> 59#include <linux/types.h> 60#include <linux/errno.h> 61#include <linux/kernel.h> 62#include <linux/ioport.h> 63#include <linux/delay.h> 64#include <linux/pci.h> 65#include <linux/wait.h> 66#include <linux/spinlock.h> 67#include <linux/sched.h> 68#include <linux/interrupt.h> 69#include <linux/blkdev.h> 70#include <linux/firmware.h> 71#include <linux/module.h> 72#include <linux/moduleparam.h> 73#include <asm/io.h> 74#include <asm/irq.h> 75#include <asm/processor.h> 76#include <scsi/scsi.h> 77#include <scsi/scsi_host.h> 78#include <scsi/scsi_tcq.h> 79#include <scsi/scsi_eh.h> 80#include <scsi/scsi_cmnd.h> 81#include "ipr.h" 82 83/* 84 * Global Data 85 */ 86static struct list_head ipr_ioa_head = LIST_HEAD_INIT(ipr_ioa_head); 87static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL; 88static unsigned int ipr_max_speed = 1; 89static int ipr_testmode = 0; 90static unsigned int ipr_fastfail = 0; 91static unsigned int ipr_transop_timeout = IPR_OPERATIONAL_TIMEOUT; 92static unsigned int ipr_enable_cache = 1; 93static unsigned int ipr_debug = 0; 94static int ipr_auto_create = 1; 95static DEFINE_SPINLOCK(ipr_driver_lock); 96 97/* This table describes the differences between DMA controller chips */ 98static const struct ipr_chip_cfg_t ipr_chip_cfg[] = { 99 { /* Gemstone, Citrine, and Obsidian */ 100 .mailbox = 0x0042C, 101 .cache_line_size = 0x20, 102 { 103 .set_interrupt_mask_reg = 0x0022C, 104 .clr_interrupt_mask_reg = 0x00230, 105 .sense_interrupt_mask_reg = 0x0022C, 106 .clr_interrupt_reg = 0x00228, 107 .sense_interrupt_reg = 0x00224, 108 .ioarrin_reg = 0x00404, 109 .sense_uproc_interrupt_reg = 0x00214, 110 .set_uproc_interrupt_reg = 0x00214, 111 .clr_uproc_interrupt_reg = 0x00218 112 } 113 }, 114 { /* Snipe and Scamp */ 115 .mailbox = 0x0052C, 116 .cache_line_size = 0x20, 117 { 118 .set_interrupt_mask_reg = 0x00288, 119 .clr_interrupt_mask_reg = 0x0028C, 120 .sense_interrupt_mask_reg = 0x00288, 121 .clr_interrupt_reg = 0x00284, 122 .sense_interrupt_reg = 0x00280, 123 .ioarrin_reg = 0x00504, 124 .sense_uproc_interrupt_reg = 0x00290, 125 .set_uproc_interrupt_reg = 0x00290, 126 .clr_uproc_interrupt_reg = 0x00294 127 } 128 }, 129}; 130 131static const struct ipr_chip_t ipr_chip[] = { 132 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, &ipr_chip_cfg[0] }, 133 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, &ipr_chip_cfg[0] }, 134 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, &ipr_chip_cfg[0] }, 135 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, &ipr_chip_cfg[0] }, 136 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, &ipr_chip_cfg[1] }, 137 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, &ipr_chip_cfg[1] } 138}; 139 140static int ipr_max_bus_speeds [] = { 141 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE 142}; 143 144MODULE_AUTHOR("Brian King <brking@us.ibm.com>"); 145MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver"); 146module_param_named(max_speed, ipr_max_speed, uint, 0); 147MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320"); 148module_param_named(log_level, ipr_log_level, uint, 0); 149MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver"); 150module_param_named(testmode, ipr_testmode, int, 0); 151MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations"); 152module_param_named(fastfail, ipr_fastfail, int, 0); 153MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries"); 154module_param_named(transop_timeout, ipr_transop_timeout, int, 0); 155MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)"); 156module_param_named(enable_cache, ipr_enable_cache, int, 0); 157MODULE_PARM_DESC(enable_cache, "Enable adapter's non-volatile write cache (default: 1)"); 158module_param_named(debug, ipr_debug, int, 0); 159MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)"); 160module_param_named(auto_create, ipr_auto_create, int, 0); 161MODULE_PARM_DESC(auto_create, "Auto-create single device RAID 0 arrays when initialized (default: 1)"); 162MODULE_LICENSE("GPL"); 163MODULE_VERSION(IPR_DRIVER_VERSION); 164 165/* A constant array of IOASCs/URCs/Error Messages */ 166static const 167struct ipr_error_table_t ipr_error_table[] = { 168 {0x00000000, 1, 1, 169 "8155: An unknown error was received"}, 170 {0x00330000, 0, 0, 171 "Soft underlength error"}, 172 {0x005A0000, 0, 0, 173 "Command to be cancelled not found"}, 174 {0x00808000, 0, 0, 175 "Qualified success"}, 176 {0x01080000, 1, 1, 177 "FFFE: Soft device bus error recovered by the IOA"}, 178 {0x01088100, 0, 1, 179 "4101: Soft device bus fabric error"}, 180 {0x01170600, 0, 1, 181 "FFF9: Device sector reassign successful"}, 182 {0x01170900, 0, 1, 183 "FFF7: Media error recovered by device rewrite procedures"}, 184 {0x01180200, 0, 1, 185 "7001: IOA sector reassignment successful"}, 186 {0x01180500, 0, 1, 187 "FFF9: Soft media error. Sector reassignment recommended"}, 188 {0x01180600, 0, 1, 189 "FFF7: Media error recovered by IOA rewrite procedures"}, 190 {0x01418000, 0, 1, 191 "FF3D: Soft PCI bus error recovered by the IOA"}, 192 {0x01440000, 1, 1, 193 "FFF6: Device hardware error recovered by the IOA"}, 194 {0x01448100, 0, 1, 195 "FFF6: Device hardware error recovered by the device"}, 196 {0x01448200, 1, 1, 197 "FF3D: Soft IOA error recovered by the IOA"}, 198 {0x01448300, 0, 1, 199 "FFFA: Undefined device response recovered by the IOA"}, 200 {0x014A0000, 1, 1, 201 "FFF6: Device bus error, message or command phase"}, 202 {0x015D0000, 0, 1, 203 "FFF6: Failure prediction threshold exceeded"}, 204 {0x015D9200, 0, 1, 205 "8009: Impending cache battery pack failure"}, 206 {0x02040400, 0, 0, 207 "34FF: Disk device format in progress"}, 208 {0x023F0000, 0, 0, 209 "Synchronization required"}, 210 {0x024E0000, 0, 0, 211 "No ready, IOA shutdown"}, 212 {0x025A0000, 0, 0, 213 "Not ready, IOA has been shutdown"}, 214 {0x02670100, 0, 1, 215 "3020: Storage subsystem configuration error"}, 216 {0x03110B00, 0, 0, 217 "FFF5: Medium error, data unreadable, recommend reassign"}, 218 {0x03110C00, 0, 0, 219 "7000: Medium error, data unreadable, do not reassign"}, 220 {0x03310000, 0, 1, 221 "FFF3: Disk media format bad"}, 222 {0x04050000, 0, 1, 223 "3002: Addressed device failed to respond to selection"}, 224 {0x04080000, 1, 1, 225 "3100: Device bus error"}, 226 {0x04080100, 0, 1, 227 "3109: IOA timed out a device command"}, 228 {0x04088000, 0, 0, 229 "3120: SCSI bus is not operational"}, 230 {0x04088100, 0, 1, 231 "4100: Hard device bus fabric error"}, 232 {0x04118000, 0, 1, 233 "9000: IOA reserved area data check"}, 234 {0x04118100, 0, 1, 235 "9001: IOA reserved area invalid data pattern"}, 236 {0x04118200, 0, 1, 237 "9002: IOA reserved area LRC error"}, 238 {0x04320000, 0, 1, 239 "102E: Out of alternate sectors for disk storage"}, 240 {0x04330000, 1, 1, 241 "FFF4: Data transfer underlength error"}, 242 {0x04338000, 1, 1, 243 "FFF4: Data transfer overlength error"}, 244 {0x043E0100, 0, 1, 245 "3400: Logical unit failure"}, 246 {0x04408500, 0, 1, 247 "FFF4: Device microcode is corrupt"}, 248 {0x04418000, 1, 1, 249 "8150: PCI bus error"}, 250 {0x04430000, 1, 0, 251 "Unsupported device bus message received"}, 252 {0x04440000, 1, 1, 253 "FFF4: Disk device problem"}, 254 {0x04448200, 1, 1, 255 "8150: Permanent IOA failure"}, 256 {0x04448300, 0, 1, 257 "3010: Disk device returned wrong response to IOA"}, 258 {0x04448400, 0, 1, 259 "8151: IOA microcode error"}, 260 {0x04448500, 0, 0, 261 "Device bus status error"}, 262 {0x04448600, 0, 1, 263 "8157: IOA error requiring IOA reset to recover"}, 264 {0x04490000, 0, 0, 265 "Message reject received from the device"}, 266 {0x04449200, 0, 1, 267 "8008: A permanent cache battery pack failure occurred"}, 268 {0x0444A000, 0, 1, 269 "9090: Disk unit has been modified after the last known status"}, 270 {0x0444A200, 0, 1, 271 "9081: IOA detected device error"}, 272 {0x0444A300, 0, 1, 273 "9082: IOA detected device error"}, 274 {0x044A0000, 1, 1, 275 "3110: Device bus error, message or command phase"}, 276 {0x04670400, 0, 1, 277 "9091: Incorrect hardware configuration change has been detected"}, 278 {0x04678000, 0, 1, 279 "9073: Invalid multi-adapter configuration"}, 280 {0x04678100, 0, 1, 281 "4010: Incorrect connection between cascaded expanders"}, 282 {0x04678200, 0, 1, 283 "4020: Connections exceed IOA design limits"}, 284 {0x04678300, 0, 1, 285 "4030: Incorrect multipath connection"}, 286 {0x04679000, 0, 1, 287 "4110: Unsupported enclosure function"}, 288 {0x046E0000, 0, 1, 289 "FFF4: Command to logical unit failed"}, 290 {0x05240000, 1, 0, 291 "Illegal request, invalid request type or request packet"}, 292 {0x05250000, 0, 0, 293 "Illegal request, invalid resource handle"}, 294 {0x05258000, 0, 0, 295 "Illegal request, commands not allowed to this device"}, 296 {0x05258100, 0, 0, 297 "Illegal request, command not allowed to a secondary adapter"}, 298 {0x05260000, 0, 0, 299 "Illegal request, invalid field in parameter list"}, 300 {0x05260100, 0, 0, 301 "Illegal request, parameter not supported"}, 302 {0x05260200, 0, 0, 303 "Illegal request, parameter value invalid"}, 304 {0x052C0000, 0, 0, 305 "Illegal request, command sequence error"}, 306 {0x052C8000, 1, 0, 307 "Illegal request, dual adapter support not enabled"}, 308 {0x06040500, 0, 1, 309 "9031: Array protection temporarily suspended, protection resuming"}, 310 {0x06040600, 0, 1, 311 "9040: Array protection temporarily suspended, protection resuming"}, 312 {0x06288000, 0, 1, 313 "3140: Device bus not ready to ready transition"}, 314 {0x06290000, 0, 1, 315 "FFFB: SCSI bus was reset"}, 316 {0x06290500, 0, 0, 317 "FFFE: SCSI bus transition to single ended"}, 318 {0x06290600, 0, 0, 319 "FFFE: SCSI bus transition to LVD"}, 320 {0x06298000, 0, 1, 321 "FFFB: SCSI bus was reset by another initiator"}, 322 {0x063F0300, 0, 1, 323 "3029: A device replacement has occurred"}, 324 {0x064C8000, 0, 1, 325 "9051: IOA cache data exists for a missing or failed device"}, 326 {0x064C8100, 0, 1, 327 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"}, 328 {0x06670100, 0, 1, 329 "9025: Disk unit is not supported at its physical location"}, 330 {0x06670600, 0, 1, 331 "3020: IOA detected a SCSI bus configuration error"}, 332 {0x06678000, 0, 1, 333 "3150: SCSI bus configuration error"}, 334 {0x06678100, 0, 1, 335 "9074: Asymmetric advanced function disk configuration"}, 336 {0x06678300, 0, 1, 337 "4040: Incomplete multipath connection between IOA and enclosure"}, 338 {0x06678400, 0, 1, 339 "4041: Incomplete multipath connection between enclosure and device"}, 340 {0x06678500, 0, 1, 341 "9075: Incomplete multipath connection between IOA and remote IOA"}, 342 {0x06678600, 0, 1, 343 "9076: Configuration error, missing remote IOA"}, 344 {0x06679100, 0, 1, 345 "4050: Enclosure does not support a required multipath function"}, 346 {0x06690200, 0, 1, 347 "9041: Array protection temporarily suspended"}, 348 {0x06698200, 0, 1, 349 "9042: Corrupt array parity detected on specified device"}, 350 {0x066B0200, 0, 1, 351 "9030: Array no longer protected due to missing or failed disk unit"}, 352 {0x066B8000, 0, 1, 353 "9071: Link operational transition"}, 354 {0x066B8100, 0, 1, 355 "9072: Link not operational transition"}, 356 {0x066B8200, 0, 1, 357 "9032: Array exposed but still protected"}, 358 {0x066B9100, 0, 1, 359 "4061: Multipath redundancy level got better"}, 360 {0x066B9200, 0, 1, 361 "4060: Multipath redundancy level got worse"}, 362 {0x07270000, 0, 0, 363 "Failure due to other device"}, 364 {0x07278000, 0, 1, 365 "9008: IOA does not support functions expected by devices"}, 366 {0x07278100, 0, 1, 367 "9010: Cache data associated with attached devices cannot be found"}, 368 {0x07278200, 0, 1, 369 "9011: Cache data belongs to devices other than those attached"}, 370 {0x07278400, 0, 1, 371 "9020: Array missing 2 or more devices with only 1 device present"}, 372 {0x07278500, 0, 1, 373 "9021: Array missing 2 or more devices with 2 or more devices present"}, 374 {0x07278600, 0, 1, 375 "9022: Exposed array is missing a required device"}, 376 {0x07278700, 0, 1, 377 "9023: Array member(s) not at required physical locations"}, 378 {0x07278800, 0, 1, 379 "9024: Array not functional due to present hardware configuration"}, 380 {0x07278900, 0, 1, 381 "9026: Array not functional due to present hardware configuration"}, 382 {0x07278A00, 0, 1, 383 "9027: Array is missing a device and parity is out of sync"}, 384 {0x07278B00, 0, 1, 385 "9028: Maximum number of arrays already exist"}, 386 {0x07278C00, 0, 1, 387 "9050: Required cache data cannot be located for a disk unit"}, 388 {0x07278D00, 0, 1, 389 "9052: Cache data exists for a device that has been modified"}, 390 {0x07278F00, 0, 1, 391 "9054: IOA resources not available due to previous problems"}, 392 {0x07279100, 0, 1, 393 "9092: Disk unit requires initialization before use"}, 394 {0x07279200, 0, 1, 395 "9029: Incorrect hardware configuration change has been detected"}, 396 {0x07279600, 0, 1, 397 "9060: One or more disk pairs are missing from an array"}, 398 {0x07279700, 0, 1, 399 "9061: One or more disks are missing from an array"}, 400 {0x07279800, 0, 1, 401 "9062: One or more disks are missing from an array"}, 402 {0x07279900, 0, 1, 403 "9063: Maximum number of functional arrays has been exceeded"}, 404 {0x0B260000, 0, 0, 405 "Aborted command, invalid descriptor"}, 406 {0x0B5A0000, 0, 0, 407 "Command terminated by host"} 408}; 409 410static const struct ipr_ses_table_entry ipr_ses_table[] = { 411 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 }, 412 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 }, 413 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */ 414 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */ 415 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */ 416 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */ 417 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 }, 418 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 }, 419 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 }, 420 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 }, 421 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 }, 422 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 }, 423 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 } 424}; 425 426/* 427 * Function Prototypes 428 */ 429static int ipr_reset_alert(struct ipr_cmnd *); 430static void ipr_process_ccn(struct ipr_cmnd *); 431static void ipr_process_error(struct ipr_cmnd *); 432static void ipr_reset_ioa_job(struct ipr_cmnd *); 433static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *, 434 enum ipr_shutdown_type); 435 436#ifdef CONFIG_SCSI_IPR_TRACE 437/** 438 * ipr_trc_hook - Add a trace entry to the driver trace 439 * @ipr_cmd: ipr command struct 440 * @type: trace type 441 * @add_data: additional data 442 * 443 * Return value: 444 * none 445 **/ 446static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd, 447 u8 type, u32 add_data) 448{ 449 struct ipr_trace_entry *trace_entry; 450 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 451 452 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++]; 453 trace_entry->time = jiffies; 454 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0]; 455 trace_entry->type = type; 456 trace_entry->cmd_index = ipr_cmd->cmd_index; 457 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle; 458 trace_entry->u.add_data = add_data; 459} 460#else 461#define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0) 462#endif 463 464/** 465 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse 466 * @ipr_cmd: ipr command struct 467 * 468 * Return value: 469 * none 470 **/ 471static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd) 472{ 473 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 474 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 475 476 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); 477 ioarcb->write_data_transfer_length = 0; 478 ioarcb->read_data_transfer_length = 0; 479 ioarcb->write_ioadl_len = 0; 480 ioarcb->read_ioadl_len = 0; 481 ioasa->ioasc = 0; 482 ioasa->residual_data_len = 0; 483 484 ipr_cmd->scsi_cmd = NULL; 485 ipr_cmd->sense_buffer[0] = 0; 486 ipr_cmd->dma_use_sg = 0; 487} 488 489/** 490 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block 491 * @ipr_cmd: ipr command struct 492 * 493 * Return value: 494 * none 495 **/ 496static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd) 497{ 498 ipr_reinit_ipr_cmnd(ipr_cmd); 499 ipr_cmd->u.scratch = 0; 500 ipr_cmd->sibling = NULL; 501 init_timer(&ipr_cmd->timer); 502} 503 504/** 505 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block 506 * @ioa_cfg: ioa config struct 507 * 508 * Return value: 509 * pointer to ipr command struct 510 **/ 511static 512struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg) 513{ 514 struct ipr_cmnd *ipr_cmd; 515 516 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue); 517 list_del(&ipr_cmd->queue); 518 ipr_init_ipr_cmnd(ipr_cmd); 519 520 return ipr_cmd; 521} 522 523/** 524 * ipr_unmap_sglist - Unmap scatterlist if mapped 525 * @ioa_cfg: ioa config struct 526 * @ipr_cmd: ipr command struct 527 * 528 * Return value: 529 * nothing 530 **/ 531static void ipr_unmap_sglist(struct ipr_ioa_cfg *ioa_cfg, 532 struct ipr_cmnd *ipr_cmd) 533{ 534 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 535 536 if (ipr_cmd->dma_use_sg) { 537 if (scsi_cmd->use_sg > 0) { 538 pci_unmap_sg(ioa_cfg->pdev, scsi_cmd->request_buffer, 539 scsi_cmd->use_sg, 540 scsi_cmd->sc_data_direction); 541 } else { 542 pci_unmap_single(ioa_cfg->pdev, ipr_cmd->dma_handle, 543 scsi_cmd->request_bufflen, 544 scsi_cmd->sc_data_direction); 545 } 546 } 547} 548 549/** 550 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts 551 * @ioa_cfg: ioa config struct 552 * @clr_ints: interrupts to clear 553 * 554 * This function masks all interrupts on the adapter, then clears the 555 * interrupts specified in the mask 556 * 557 * Return value: 558 * none 559 **/ 560static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg, 561 u32 clr_ints) 562{ 563 volatile u32 int_reg; 564 565 /* Stop new interrupts */ 566 ioa_cfg->allow_interrupts = 0; 567 568 /* Set interrupt mask to stop all new interrupts */ 569 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg); 570 571 /* Clear any pending interrupts */ 572 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg); 573 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 574} 575 576/** 577 * ipr_save_pcix_cmd_reg - Save PCI-X command register 578 * @ioa_cfg: ioa config struct 579 * 580 * Return value: 581 * 0 on success / -EIO on failure 582 **/ 583static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) 584{ 585 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); 586 587 if (pcix_cmd_reg == 0) { 588 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n"); 589 return -EIO; 590 } 591 592 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, 593 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { 594 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n"); 595 return -EIO; 596 } 597 598 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO; 599 return 0; 600} 601 602/** 603 * ipr_set_pcix_cmd_reg - Setup PCI-X command register 604 * @ioa_cfg: ioa config struct 605 * 606 * Return value: 607 * 0 on success / -EIO on failure 608 **/ 609static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) 610{ 611 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); 612 613 if (pcix_cmd_reg) { 614 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, 615 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { 616 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n"); 617 return -EIO; 618 } 619 } else { 620 dev_err(&ioa_cfg->pdev->dev, 621 "Failed to setup PCI-X command register\n"); 622 return -EIO; 623 } 624 625 return 0; 626} 627 628/** 629 * ipr_scsi_eh_done - mid-layer done function for aborted ops 630 * @ipr_cmd: ipr command struct 631 * 632 * This function is invoked by the interrupt handler for 633 * ops generated by the SCSI mid-layer which are being aborted. 634 * 635 * Return value: 636 * none 637 **/ 638static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd) 639{ 640 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 641 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 642 643 scsi_cmd->result |= (DID_ERROR << 16); 644 645 ipr_unmap_sglist(ioa_cfg, ipr_cmd); 646 scsi_cmd->scsi_done(scsi_cmd); 647 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 648} 649 650/** 651 * ipr_fail_all_ops - Fails all outstanding ops. 652 * @ioa_cfg: ioa config struct 653 * 654 * This function fails all outstanding ops. 655 * 656 * Return value: 657 * none 658 **/ 659static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg) 660{ 661 struct ipr_cmnd *ipr_cmd, *temp; 662 663 ENTER; 664 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) { 665 list_del(&ipr_cmd->queue); 666 667 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET); 668 ipr_cmd->ioasa.ilid = cpu_to_be32(IPR_DRIVER_ILID); 669 670 if (ipr_cmd->scsi_cmd) 671 ipr_cmd->done = ipr_scsi_eh_done; 672 673 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET); 674 del_timer(&ipr_cmd->timer); 675 ipr_cmd->done(ipr_cmd); 676 } 677 678 LEAVE; 679} 680 681/** 682 * ipr_do_req - Send driver initiated requests. 683 * @ipr_cmd: ipr command struct 684 * @done: done function 685 * @timeout_func: timeout function 686 * @timeout: timeout value 687 * 688 * This function sends the specified command to the adapter with the 689 * timeout given. The done function is invoked on command completion. 690 * 691 * Return value: 692 * none 693 **/ 694static void ipr_do_req(struct ipr_cmnd *ipr_cmd, 695 void (*done) (struct ipr_cmnd *), 696 void (*timeout_func) (struct ipr_cmnd *), u32 timeout) 697{ 698 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 699 700 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 701 702 ipr_cmd->done = done; 703 704 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 705 ipr_cmd->timer.expires = jiffies + timeout; 706 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func; 707 708 add_timer(&ipr_cmd->timer); 709 710 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0); 711 712 mb(); 713 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr), 714 ioa_cfg->regs.ioarrin_reg); 715} 716 717/** 718 * ipr_internal_cmd_done - Op done function for an internally generated op. 719 * @ipr_cmd: ipr command struct 720 * 721 * This function is the op done function for an internally generated, 722 * blocking op. It simply wakes the sleeping thread. 723 * 724 * Return value: 725 * none 726 **/ 727static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd) 728{ 729 if (ipr_cmd->sibling) 730 ipr_cmd->sibling = NULL; 731 else 732 complete(&ipr_cmd->completion); 733} 734 735/** 736 * ipr_send_blocking_cmd - Send command and sleep on its completion. 737 * @ipr_cmd: ipr command struct 738 * @timeout_func: function to invoke if command times out 739 * @timeout: timeout 740 * 741 * Return value: 742 * none 743 **/ 744static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd, 745 void (*timeout_func) (struct ipr_cmnd *ipr_cmd), 746 u32 timeout) 747{ 748 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 749 750 init_completion(&ipr_cmd->completion); 751 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout); 752 753 spin_unlock_irq(ioa_cfg->host->host_lock); 754 wait_for_completion(&ipr_cmd->completion); 755 spin_lock_irq(ioa_cfg->host->host_lock); 756} 757 758/** 759 * ipr_send_hcam - Send an HCAM to the adapter. 760 * @ioa_cfg: ioa config struct 761 * @type: HCAM type 762 * @hostrcb: hostrcb struct 763 * 764 * This function will send a Host Controlled Async command to the adapter. 765 * If HCAMs are currently not allowed to be issued to the adapter, it will 766 * place the hostrcb on the free queue. 767 * 768 * Return value: 769 * none 770 **/ 771static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type, 772 struct ipr_hostrcb *hostrcb) 773{ 774 struct ipr_cmnd *ipr_cmd; 775 struct ipr_ioarcb *ioarcb; 776 777 if (ioa_cfg->allow_cmds) { 778 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 779 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 780 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q); 781 782 ipr_cmd->u.hostrcb = hostrcb; 783 ioarcb = &ipr_cmd->ioarcb; 784 785 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 786 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM; 787 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC; 788 ioarcb->cmd_pkt.cdb[1] = type; 789 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff; 790 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff; 791 792 ioarcb->read_data_transfer_length = cpu_to_be32(sizeof(hostrcb->hcam)); 793 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 794 ipr_cmd->ioadl[0].flags_and_data_len = 795 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(hostrcb->hcam)); 796 ipr_cmd->ioadl[0].address = cpu_to_be32(hostrcb->hostrcb_dma); 797 798 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE) 799 ipr_cmd->done = ipr_process_ccn; 800 else 801 ipr_cmd->done = ipr_process_error; 802 803 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR); 804 805 mb(); 806 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr), 807 ioa_cfg->regs.ioarrin_reg); 808 } else { 809 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 810 } 811} 812 813/** 814 * ipr_init_res_entry - Initialize a resource entry struct. 815 * @res: resource entry struct 816 * 817 * Return value: 818 * none 819 **/ 820static void ipr_init_res_entry(struct ipr_resource_entry *res) 821{ 822 res->needs_sync_complete = 0; 823 res->in_erp = 0; 824 res->add_to_ml = 0; 825 res->del_from_ml = 0; 826 res->resetting_device = 0; 827 res->sdev = NULL; 828} 829 830/** 831 * ipr_handle_config_change - Handle a config change from the adapter 832 * @ioa_cfg: ioa config struct 833 * @hostrcb: hostrcb 834 * 835 * Return value: 836 * none 837 **/ 838static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg, 839 struct ipr_hostrcb *hostrcb) 840{ 841 struct ipr_resource_entry *res = NULL; 842 struct ipr_config_table_entry *cfgte; 843 u32 is_ndn = 1; 844 845 cfgte = &hostrcb->hcam.u.ccn.cfgte; 846 847 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 848 if (!memcmp(&res->cfgte.res_addr, &cfgte->res_addr, 849 sizeof(cfgte->res_addr))) { 850 is_ndn = 0; 851 break; 852 } 853 } 854 855 if (is_ndn) { 856 if (list_empty(&ioa_cfg->free_res_q)) { 857 ipr_send_hcam(ioa_cfg, 858 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, 859 hostrcb); 860 return; 861 } 862 863 res = list_entry(ioa_cfg->free_res_q.next, 864 struct ipr_resource_entry, queue); 865 866 list_del(&res->queue); 867 ipr_init_res_entry(res); 868 list_add_tail(&res->queue, &ioa_cfg->used_res_q); 869 } 870 871 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry)); 872 873 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) { 874 if (res->sdev) { 875 res->del_from_ml = 1; 876 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE; 877 if (ioa_cfg->allow_ml_add_del) 878 schedule_work(&ioa_cfg->work_q); 879 } else 880 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 881 } else if (!res->sdev) { 882 res->add_to_ml = 1; 883 if (ioa_cfg->allow_ml_add_del) 884 schedule_work(&ioa_cfg->work_q); 885 } 886 887 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 888} 889 890/** 891 * ipr_process_ccn - Op done function for a CCN. 892 * @ipr_cmd: ipr command struct 893 * 894 * This function is the op done function for a configuration 895 * change notification host controlled async from the adapter. 896 * 897 * Return value: 898 * none 899 **/ 900static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd) 901{ 902 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 903 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; 904 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 905 906 list_del(&hostrcb->queue); 907 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 908 909 if (ioasc) { 910 if (ioasc != IPR_IOASC_IOA_WAS_RESET) 911 dev_err(&ioa_cfg->pdev->dev, 912 "Host RCB failed with IOASC: 0x%08X\n", ioasc); 913 914 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 915 } else { 916 ipr_handle_config_change(ioa_cfg, hostrcb); 917 } 918} 919 920/** 921 * ipr_log_vpd - Log the passed VPD to the error log. 922 * @vpd: vendor/product id/sn struct 923 * 924 * Return value: 925 * none 926 **/ 927static void ipr_log_vpd(struct ipr_vpd *vpd) 928{ 929 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN 930 + IPR_SERIAL_NUM_LEN]; 931 932 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN); 933 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id, 934 IPR_PROD_ID_LEN); 935 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0'; 936 ipr_err("Vendor/Product ID: %s\n", buffer); 937 938 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN); 939 buffer[IPR_SERIAL_NUM_LEN] = '\0'; 940 ipr_err(" Serial Number: %s\n", buffer); 941} 942 943/** 944 * ipr_log_ext_vpd - Log the passed extended VPD to the error log. 945 * @vpd: vendor/product id/sn/wwn struct 946 * 947 * Return value: 948 * none 949 **/ 950static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd) 951{ 952 ipr_log_vpd(&vpd->vpd); 953 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]), 954 be32_to_cpu(vpd->wwid[1])); 955} 956 957/** 958 * ipr_log_enhanced_cache_error - Log a cache error. 959 * @ioa_cfg: ioa config struct 960 * @hostrcb: hostrcb struct 961 * 962 * Return value: 963 * none 964 **/ 965static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg, 966 struct ipr_hostrcb *hostrcb) 967{ 968 struct ipr_hostrcb_type_12_error *error = 969 &hostrcb->hcam.u.error.u.type_12_error; 970 971 ipr_err("-----Current Configuration-----\n"); 972 ipr_err("Cache Directory Card Information:\n"); 973 ipr_log_ext_vpd(&error->ioa_vpd); 974 ipr_err("Adapter Card Information:\n"); 975 ipr_log_ext_vpd(&error->cfc_vpd); 976 977 ipr_err("-----Expected Configuration-----\n"); 978 ipr_err("Cache Directory Card Information:\n"); 979 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd); 980 ipr_err("Adapter Card Information:\n"); 981 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd); 982 983 ipr_err("Additional IOA Data: %08X %08X %08X\n", 984 be32_to_cpu(error->ioa_data[0]), 985 be32_to_cpu(error->ioa_data[1]), 986 be32_to_cpu(error->ioa_data[2])); 987} 988 989/** 990 * ipr_log_cache_error - Log a cache error. 991 * @ioa_cfg: ioa config struct 992 * @hostrcb: hostrcb struct 993 * 994 * Return value: 995 * none 996 **/ 997static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg, 998 struct ipr_hostrcb *hostrcb) 999{ 1000 struct ipr_hostrcb_type_02_error *error = 1001 &hostrcb->hcam.u.error.u.type_02_error; 1002 1003 ipr_err("-----Current Configuration-----\n"); 1004 ipr_err("Cache Directory Card Information:\n"); 1005 ipr_log_vpd(&error->ioa_vpd); 1006 ipr_err("Adapter Card Information:\n"); 1007 ipr_log_vpd(&error->cfc_vpd); 1008 1009 ipr_err("-----Expected Configuration-----\n"); 1010 ipr_err("Cache Directory Card Information:\n"); 1011 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd); 1012 ipr_err("Adapter Card Information:\n"); 1013 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd); 1014 1015 ipr_err("Additional IOA Data: %08X %08X %08X\n", 1016 be32_to_cpu(error->ioa_data[0]), 1017 be32_to_cpu(error->ioa_data[1]), 1018 be32_to_cpu(error->ioa_data[2])); 1019} 1020 1021/** 1022 * ipr_log_enhanced_config_error - Log a configuration error. 1023 * @ioa_cfg: ioa config struct 1024 * @hostrcb: hostrcb struct 1025 * 1026 * Return value: 1027 * none 1028 **/ 1029static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg, 1030 struct ipr_hostrcb *hostrcb) 1031{ 1032 int errors_logged, i; 1033 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry; 1034 struct ipr_hostrcb_type_13_error *error; 1035 1036 error = &hostrcb->hcam.u.error.u.type_13_error; 1037 errors_logged = be32_to_cpu(error->errors_logged); 1038 1039 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1040 be32_to_cpu(error->errors_detected), errors_logged); 1041 1042 dev_entry = error->dev; 1043 1044 for (i = 0; i < errors_logged; i++, dev_entry++) { 1045 ipr_err_separator; 1046 1047 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1); 1048 ipr_log_ext_vpd(&dev_entry->vpd); 1049 1050 ipr_err("-----New Device Information-----\n"); 1051 ipr_log_ext_vpd(&dev_entry->new_vpd); 1052 1053 ipr_err("Cache Directory Card Information:\n"); 1054 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd); 1055 1056 ipr_err("Adapter Card Information:\n"); 1057 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd); 1058 } 1059} 1060 1061/** 1062 * ipr_log_config_error - Log a configuration error. 1063 * @ioa_cfg: ioa config struct 1064 * @hostrcb: hostrcb struct 1065 * 1066 * Return value: 1067 * none 1068 **/ 1069static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg, 1070 struct ipr_hostrcb *hostrcb) 1071{ 1072 int errors_logged, i; 1073 struct ipr_hostrcb_device_data_entry *dev_entry; 1074 struct ipr_hostrcb_type_03_error *error; 1075 1076 error = &hostrcb->hcam.u.error.u.type_03_error; 1077 errors_logged = be32_to_cpu(error->errors_logged); 1078 1079 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1080 be32_to_cpu(error->errors_detected), errors_logged); 1081 1082 dev_entry = error->dev; 1083 1084 for (i = 0; i < errors_logged; i++, dev_entry++) { 1085 ipr_err_separator; 1086 1087 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1); 1088 ipr_log_vpd(&dev_entry->vpd); 1089 1090 ipr_err("-----New Device Information-----\n"); 1091 ipr_log_vpd(&dev_entry->new_vpd); 1092 1093 ipr_err("Cache Directory Card Information:\n"); 1094 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd); 1095 1096 ipr_err("Adapter Card Information:\n"); 1097 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd); 1098 1099 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n", 1100 be32_to_cpu(dev_entry->ioa_data[0]), 1101 be32_to_cpu(dev_entry->ioa_data[1]), 1102 be32_to_cpu(dev_entry->ioa_data[2]), 1103 be32_to_cpu(dev_entry->ioa_data[3]), 1104 be32_to_cpu(dev_entry->ioa_data[4])); 1105 } 1106} 1107 1108/** 1109 * ipr_log_enhanced_array_error - Log an array configuration error. 1110 * @ioa_cfg: ioa config struct 1111 * @hostrcb: hostrcb struct 1112 * 1113 * Return value: 1114 * none 1115 **/ 1116static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg, 1117 struct ipr_hostrcb *hostrcb) 1118{ 1119 int i, num_entries; 1120 struct ipr_hostrcb_type_14_error *error; 1121 struct ipr_hostrcb_array_data_entry_enhanced *array_entry; 1122 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 1123 1124 error = &hostrcb->hcam.u.error.u.type_14_error; 1125 1126 ipr_err_separator; 1127 1128 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n", 1129 error->protection_level, 1130 ioa_cfg->host->host_no, 1131 error->last_func_vset_res_addr.bus, 1132 error->last_func_vset_res_addr.target, 1133 error->last_func_vset_res_addr.lun); 1134 1135 ipr_err_separator; 1136 1137 array_entry = error->array_member; 1138 num_entries = min_t(u32, be32_to_cpu(error->num_entries), 1139 sizeof(error->array_member)); 1140 1141 for (i = 0; i < num_entries; i++, array_entry++) { 1142 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 1143 continue; 1144 1145 if (be32_to_cpu(error->exposed_mode_adn) == i) 1146 ipr_err("Exposed Array Member %d:\n", i); 1147 else 1148 ipr_err("Array Member %d:\n", i); 1149 1150 ipr_log_ext_vpd(&array_entry->vpd); 1151 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location"); 1152 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr, 1153 "Expected Location"); 1154 1155 ipr_err_separator; 1156 } 1157} 1158 1159/** 1160 * ipr_log_array_error - Log an array configuration error. 1161 * @ioa_cfg: ioa config struct 1162 * @hostrcb: hostrcb struct 1163 * 1164 * Return value: 1165 * none 1166 **/ 1167static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg, 1168 struct ipr_hostrcb *hostrcb) 1169{ 1170 int i; 1171 struct ipr_hostrcb_type_04_error *error; 1172 struct ipr_hostrcb_array_data_entry *array_entry; 1173 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 1174 1175 error = &hostrcb->hcam.u.error.u.type_04_error; 1176 1177 ipr_err_separator; 1178 1179 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n", 1180 error->protection_level, 1181 ioa_cfg->host->host_no, 1182 error->last_func_vset_res_addr.bus, 1183 error->last_func_vset_res_addr.target, 1184 error->last_func_vset_res_addr.lun); 1185 1186 ipr_err_separator; 1187 1188 array_entry = error->array_member; 1189 1190 for (i = 0; i < 18; i++) { 1191 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 1192 continue; 1193 1194 if (be32_to_cpu(error->exposed_mode_adn) == i) 1195 ipr_err("Exposed Array Member %d:\n", i); 1196 else 1197 ipr_err("Array Member %d:\n", i); 1198 1199 ipr_log_vpd(&array_entry->vpd); 1200 1201 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location"); 1202 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr, 1203 "Expected Location"); 1204 1205 ipr_err_separator; 1206 1207 if (i == 9) 1208 array_entry = error->array_member2; 1209 else 1210 array_entry++; 1211 } 1212} 1213 1214/** 1215 * ipr_log_hex_data - Log additional hex IOA error data. 1216 * @data: IOA error data 1217 * @len: data length 1218 * 1219 * Return value: 1220 * none 1221 **/ 1222static void ipr_log_hex_data(u32 *data, int len) 1223{ 1224 int i; 1225 1226 if (len == 0) 1227 return; 1228 1229 for (i = 0; i < len / 4; i += 4) { 1230 ipr_err("%08X: %08X %08X %08X %08X\n", i*4, 1231 be32_to_cpu(data[i]), 1232 be32_to_cpu(data[i+1]), 1233 be32_to_cpu(data[i+2]), 1234 be32_to_cpu(data[i+3])); 1235 } 1236} 1237 1238/** 1239 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error. 1240 * @ioa_cfg: ioa config struct 1241 * @hostrcb: hostrcb struct 1242 * 1243 * Return value: 1244 * none 1245 **/ 1246static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg, 1247 struct ipr_hostrcb *hostrcb) 1248{ 1249 struct ipr_hostrcb_type_17_error *error; 1250 1251 error = &hostrcb->hcam.u.error.u.type_17_error; 1252 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 1253 1254 ipr_err("%s\n", error->failure_reason); 1255 ipr_err("Remote Adapter VPD:\n"); 1256 ipr_log_ext_vpd(&error->vpd); 1257 ipr_log_hex_data(error->data, 1258 be32_to_cpu(hostrcb->hcam.length) - 1259 (offsetof(struct ipr_hostrcb_error, u) + 1260 offsetof(struct ipr_hostrcb_type_17_error, data))); 1261} 1262 1263/** 1264 * ipr_log_dual_ioa_error - Log a dual adapter error. 1265 * @ioa_cfg: ioa config struct 1266 * @hostrcb: hostrcb struct 1267 * 1268 * Return value: 1269 * none 1270 **/ 1271static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg, 1272 struct ipr_hostrcb *hostrcb) 1273{ 1274 struct ipr_hostrcb_type_07_error *error; 1275 1276 error = &hostrcb->hcam.u.error.u.type_07_error; 1277 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 1278 1279 ipr_err("%s\n", error->failure_reason); 1280 ipr_err("Remote Adapter VPD:\n"); 1281 ipr_log_vpd(&error->vpd); 1282 ipr_log_hex_data(error->data, 1283 be32_to_cpu(hostrcb->hcam.length) - 1284 (offsetof(struct ipr_hostrcb_error, u) + 1285 offsetof(struct ipr_hostrcb_type_07_error, data))); 1286} 1287 1288/** 1289 * ipr_log_generic_error - Log an adapter error. 1290 * @ioa_cfg: ioa config struct 1291 * @hostrcb: hostrcb struct 1292 * 1293 * Return value: 1294 * none 1295 **/ 1296static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg, 1297 struct ipr_hostrcb *hostrcb) 1298{ 1299 ipr_log_hex_data(hostrcb->hcam.u.raw.data, 1300 be32_to_cpu(hostrcb->hcam.length)); 1301} 1302 1303/** 1304 * ipr_get_error - Find the specfied IOASC in the ipr_error_table. 1305 * @ioasc: IOASC 1306 * 1307 * This function will return the index of into the ipr_error_table 1308 * for the specified IOASC. If the IOASC is not in the table, 1309 * 0 will be returned, which points to the entry used for unknown errors. 1310 * 1311 * Return value: 1312 * index into the ipr_error_table 1313 **/ 1314static u32 ipr_get_error(u32 ioasc) 1315{ 1316 int i; 1317 1318 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++) 1319 if (ipr_error_table[i].ioasc == ioasc) 1320 return i; 1321 1322 return 0; 1323} 1324 1325/** 1326 * ipr_handle_log_data - Log an adapter error. 1327 * @ioa_cfg: ioa config struct 1328 * @hostrcb: hostrcb struct 1329 * 1330 * This function logs an adapter error to the system. 1331 * 1332 * Return value: 1333 * none 1334 **/ 1335static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg, 1336 struct ipr_hostrcb *hostrcb) 1337{ 1338 u32 ioasc; 1339 int error_index; 1340 1341 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY) 1342 return; 1343 1344 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST) 1345 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n"); 1346 1347 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc); 1348 1349 if (ioasc == IPR_IOASC_BUS_WAS_RESET || 1350 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) { 1351 /* Tell the midlayer we had a bus reset so it will handle the UA properly */ 1352 scsi_report_bus_reset(ioa_cfg->host, 1353 hostrcb->hcam.u.error.failing_dev_res_addr.bus); 1354 } 1355 1356 error_index = ipr_get_error(ioasc); 1357 1358 if (!ipr_error_table[error_index].log_hcam) 1359 return; 1360 1361 if (ipr_is_device(&hostrcb->hcam.u.error.failing_dev_res_addr)) { 1362 ipr_ra_err(ioa_cfg, hostrcb->hcam.u.error.failing_dev_res_addr, 1363 "%s\n", ipr_error_table[error_index].error); 1364 } else { 1365 dev_err(&ioa_cfg->pdev->dev, "%s\n", 1366 ipr_error_table[error_index].error); 1367 } 1368 1369 /* Set indication we have logged an error */ 1370 ioa_cfg->errors_logged++; 1371 1372 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL) 1373 return; 1374 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw)) 1375 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw)); 1376 1377 switch (hostrcb->hcam.overlay_id) { 1378 case IPR_HOST_RCB_OVERLAY_ID_2: 1379 ipr_log_cache_error(ioa_cfg, hostrcb); 1380 break; 1381 case IPR_HOST_RCB_OVERLAY_ID_3: 1382 ipr_log_config_error(ioa_cfg, hostrcb); 1383 break; 1384 case IPR_HOST_RCB_OVERLAY_ID_4: 1385 case IPR_HOST_RCB_OVERLAY_ID_6: 1386 ipr_log_array_error(ioa_cfg, hostrcb); 1387 break; 1388 case IPR_HOST_RCB_OVERLAY_ID_7: 1389 ipr_log_dual_ioa_error(ioa_cfg, hostrcb); 1390 break; 1391 case IPR_HOST_RCB_OVERLAY_ID_12: 1392 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb); 1393 break; 1394 case IPR_HOST_RCB_OVERLAY_ID_13: 1395 ipr_log_enhanced_config_error(ioa_cfg, hostrcb); 1396 break; 1397 case IPR_HOST_RCB_OVERLAY_ID_14: 1398 case IPR_HOST_RCB_OVERLAY_ID_16: 1399 ipr_log_enhanced_array_error(ioa_cfg, hostrcb); 1400 break; 1401 case IPR_HOST_RCB_OVERLAY_ID_17: 1402 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb); 1403 break; 1404 case IPR_HOST_RCB_OVERLAY_ID_1: 1405 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT: 1406 default: 1407 ipr_log_generic_error(ioa_cfg, hostrcb); 1408 break; 1409 } 1410} 1411 1412/** 1413 * ipr_process_error - Op done function for an adapter error log. 1414 * @ipr_cmd: ipr command struct 1415 * 1416 * This function is the op done function for an error log host 1417 * controlled async from the adapter. It will log the error and 1418 * send the HCAM back to the adapter. 1419 * 1420 * Return value: 1421 * none 1422 **/ 1423static void ipr_process_error(struct ipr_cmnd *ipr_cmd) 1424{ 1425 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 1426 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; 1427 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 1428 1429 list_del(&hostrcb->queue); 1430 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 1431 1432 if (!ioasc) { 1433 ipr_handle_log_data(ioa_cfg, hostrcb); 1434 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) { 1435 dev_err(&ioa_cfg->pdev->dev, 1436 "Host RCB failed with IOASC: 0x%08X\n", ioasc); 1437 } 1438 1439 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); 1440} 1441 1442/** 1443 * ipr_timeout - An internally generated op has timed out. 1444 * @ipr_cmd: ipr command struct 1445 * 1446 * This function blocks host requests and initiates an 1447 * adapter reset. 1448 * 1449 * Return value: 1450 * none 1451 **/ 1452static void ipr_timeout(struct ipr_cmnd *ipr_cmd) 1453{ 1454 unsigned long lock_flags = 0; 1455 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 1456 1457 ENTER; 1458 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 1459 1460 ioa_cfg->errors_logged++; 1461 dev_err(&ioa_cfg->pdev->dev, 1462 "Adapter being reset due to command timeout.\n"); 1463 1464 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 1465 ioa_cfg->sdt_state = GET_DUMP; 1466 1467 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) 1468 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 1469 1470 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 1471 LEAVE; 1472} 1473 1474/** 1475 * ipr_oper_timeout - Adapter timed out transitioning to operational 1476 * @ipr_cmd: ipr command struct 1477 * 1478 * This function blocks host requests and initiates an 1479 * adapter reset. 1480 * 1481 * Return value: 1482 * none 1483 **/ 1484static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd) 1485{ 1486 unsigned long lock_flags = 0; 1487 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 1488 1489 ENTER; 1490 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 1491 1492 ioa_cfg->errors_logged++; 1493 dev_err(&ioa_cfg->pdev->dev, 1494 "Adapter timed out transitioning to operational.\n"); 1495 1496 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 1497 ioa_cfg->sdt_state = GET_DUMP; 1498 1499 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) { 1500 if (ipr_fastfail) 1501 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES; 1502 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 1503 } 1504 1505 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 1506 LEAVE; 1507} 1508 1509/** 1510 * ipr_reset_reload - Reset/Reload the IOA 1511 * @ioa_cfg: ioa config struct 1512 * @shutdown_type: shutdown type 1513 * 1514 * This function resets the adapter and re-initializes it. 1515 * This function assumes that all new host commands have been stopped. 1516 * Return value: 1517 * SUCCESS / FAILED 1518 **/ 1519static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg, 1520 enum ipr_shutdown_type shutdown_type) 1521{ 1522 if (!ioa_cfg->in_reset_reload) 1523 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); 1524 1525 spin_unlock_irq(ioa_cfg->host->host_lock); 1526 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 1527 spin_lock_irq(ioa_cfg->host->host_lock); 1528 1529 /* If we got hit with a host reset while we were already resetting 1530 the adapter for some reason, and the reset failed. */ 1531 if (ioa_cfg->ioa_is_dead) { 1532 ipr_trace; 1533 return FAILED; 1534 } 1535 1536 return SUCCESS; 1537} 1538 1539/** 1540 * ipr_find_ses_entry - Find matching SES in SES table 1541 * @res: resource entry struct of SES 1542 * 1543 * Return value: 1544 * pointer to SES table entry / NULL on failure 1545 **/ 1546static const struct ipr_ses_table_entry * 1547ipr_find_ses_entry(struct ipr_resource_entry *res) 1548{ 1549 int i, j, matches; 1550 const struct ipr_ses_table_entry *ste = ipr_ses_table; 1551 1552 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) { 1553 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) { 1554 if (ste->compare_product_id_byte[j] == 'X') { 1555 if (res->cfgte.std_inq_data.vpids.product_id[j] == ste->product_id[j]) 1556 matches++; 1557 else 1558 break; 1559 } else 1560 matches++; 1561 } 1562 1563 if (matches == IPR_PROD_ID_LEN) 1564 return ste; 1565 } 1566 1567 return NULL; 1568} 1569 1570/** 1571 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus 1572 * @ioa_cfg: ioa config struct 1573 * @bus: SCSI bus 1574 * @bus_width: bus width 1575 * 1576 * Return value: 1577 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz 1578 * For a 2-byte wide SCSI bus, the maximum transfer speed is 1579 * twice the maximum transfer rate (e.g. for a wide enabled bus, 1580 * max 160MHz = max 320MB/sec). 1581 **/ 1582static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width) 1583{ 1584 struct ipr_resource_entry *res; 1585 const struct ipr_ses_table_entry *ste; 1586 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width); 1587 1588 /* Loop through each config table entry in the config table buffer */ 1589 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 1590 if (!(IPR_IS_SES_DEVICE(res->cfgte.std_inq_data))) 1591 continue; 1592 1593 if (bus != res->cfgte.res_addr.bus) 1594 continue; 1595 1596 if (!(ste = ipr_find_ses_entry(res))) 1597 continue; 1598 1599 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8); 1600 } 1601 1602 return max_xfer_rate; 1603} 1604 1605/** 1606 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA 1607 * @ioa_cfg: ioa config struct 1608 * @max_delay: max delay in micro-seconds to wait 1609 * 1610 * Waits for an IODEBUG ACK from the IOA, doing busy looping. 1611 * 1612 * Return value: 1613 * 0 on success / other on failure 1614 **/ 1615static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay) 1616{ 1617 volatile u32 pcii_reg; 1618 int delay = 1; 1619 1620 /* Read interrupt reg until IOA signals IO Debug Acknowledge */ 1621 while (delay < max_delay) { 1622 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 1623 1624 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE) 1625 return 0; 1626 1627 /* udelay cannot be used if delay is more than a few milliseconds */ 1628 if ((delay / 1000) > MAX_UDELAY_MS) 1629 mdelay(delay / 1000); 1630 else 1631 udelay(delay); 1632 1633 delay += delay; 1634 } 1635 return -EIO; 1636} 1637 1638/** 1639 * ipr_get_ldump_data_section - Dump IOA memory 1640 * @ioa_cfg: ioa config struct 1641 * @start_addr: adapter address to dump 1642 * @dest: destination kernel buffer 1643 * @length_in_words: length to dump in 4 byte words 1644 * 1645 * Return value: 1646 * 0 on success / -EIO on failure 1647 **/ 1648static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg, 1649 u32 start_addr, 1650 __be32 *dest, u32 length_in_words) 1651{ 1652 volatile u32 temp_pcii_reg; 1653 int i, delay = 0; 1654 1655 /* Write IOA interrupt reg starting LDUMP state */ 1656 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT), 1657 ioa_cfg->regs.set_uproc_interrupt_reg); 1658 1659 /* Wait for IO debug acknowledge */ 1660 if (ipr_wait_iodbg_ack(ioa_cfg, 1661 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) { 1662 dev_err(&ioa_cfg->pdev->dev, 1663 "IOA dump long data transfer timeout\n"); 1664 return -EIO; 1665 } 1666 1667 /* Signal LDUMP interlocked - clear IO debug ack */ 1668 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 1669 ioa_cfg->regs.clr_interrupt_reg); 1670 1671 /* Write Mailbox with starting address */ 1672 writel(start_addr, ioa_cfg->ioa_mailbox); 1673 1674 /* Signal address valid - clear IOA Reset alert */ 1675 writel(IPR_UPROCI_RESET_ALERT, 1676 ioa_cfg->regs.clr_uproc_interrupt_reg); 1677 1678 for (i = 0; i < length_in_words; i++) { 1679 /* Wait for IO debug acknowledge */ 1680 if (ipr_wait_iodbg_ack(ioa_cfg, 1681 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) { 1682 dev_err(&ioa_cfg->pdev->dev, 1683 "IOA dump short data transfer timeout\n"); 1684 return -EIO; 1685 } 1686 1687 /* Read data from mailbox and increment destination pointer */ 1688 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox)); 1689 dest++; 1690 1691 /* For all but the last word of data, signal data received */ 1692 if (i < (length_in_words - 1)) { 1693 /* Signal dump data received - Clear IO debug Ack */ 1694 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 1695 ioa_cfg->regs.clr_interrupt_reg); 1696 } 1697 } 1698 1699 /* Signal end of block transfer. Set reset alert then clear IO debug ack */ 1700 writel(IPR_UPROCI_RESET_ALERT, 1701 ioa_cfg->regs.set_uproc_interrupt_reg); 1702 1703 writel(IPR_UPROCI_IO_DEBUG_ALERT, 1704 ioa_cfg->regs.clr_uproc_interrupt_reg); 1705 1706 /* Signal dump data received - Clear IO debug Ack */ 1707 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 1708 ioa_cfg->regs.clr_interrupt_reg); 1709 1710 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */ 1711 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) { 1712 temp_pcii_reg = 1713 readl(ioa_cfg->regs.sense_uproc_interrupt_reg); 1714 1715 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT)) 1716 return 0; 1717 1718 udelay(10); 1719 delay += 10; 1720 } 1721 1722 return 0; 1723} 1724 1725#ifdef CONFIG_SCSI_IPR_DUMP 1726/** 1727 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer 1728 * @ioa_cfg: ioa config struct 1729 * @pci_address: adapter address 1730 * @length: length of data to copy 1731 * 1732 * Copy data from PCI adapter to kernel buffer. 1733 * Note: length MUST be a 4 byte multiple 1734 * Return value: 1735 * 0 on success / other on failure 1736 **/ 1737static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg, 1738 unsigned long pci_address, u32 length) 1739{ 1740 int bytes_copied = 0; 1741 int cur_len, rc, rem_len, rem_page_len; 1742 __be32 *page; 1743 unsigned long lock_flags = 0; 1744 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump; 1745 1746 while (bytes_copied < length && 1747 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) { 1748 if (ioa_dump->page_offset >= PAGE_SIZE || 1749 ioa_dump->page_offset == 0) { 1750 page = (__be32 *)__get_free_page(GFP_ATOMIC); 1751 1752 if (!page) { 1753 ipr_trace; 1754 return bytes_copied; 1755 } 1756 1757 ioa_dump->page_offset = 0; 1758 ioa_dump->ioa_data[ioa_dump->next_page_index] = page; 1759 ioa_dump->next_page_index++; 1760 } else 1761 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1]; 1762 1763 rem_len = length - bytes_copied; 1764 rem_page_len = PAGE_SIZE - ioa_dump->page_offset; 1765 cur_len = min(rem_len, rem_page_len); 1766 1767 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 1768 if (ioa_cfg->sdt_state == ABORT_DUMP) { 1769 rc = -EIO; 1770 } else { 1771 rc = ipr_get_ldump_data_section(ioa_cfg, 1772 pci_address + bytes_copied, 1773 &page[ioa_dump->page_offset / 4], 1774 (cur_len / sizeof(u32))); 1775 } 1776 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 1777 1778 if (!rc) { 1779 ioa_dump->page_offset += cur_len; 1780 bytes_copied += cur_len; 1781 } else { 1782 ipr_trace; 1783 break; 1784 } 1785 schedule(); 1786 } 1787 1788 return bytes_copied; 1789} 1790 1791/** 1792 * ipr_init_dump_entry_hdr - Initialize a dump entry header. 1793 * @hdr: dump entry header struct 1794 * 1795 * Return value: 1796 * nothing 1797 **/ 1798static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr) 1799{ 1800 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER; 1801 hdr->num_elems = 1; 1802 hdr->offset = sizeof(*hdr); 1803 hdr->status = IPR_DUMP_STATUS_SUCCESS; 1804} 1805 1806/** 1807 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump. 1808 * @ioa_cfg: ioa config struct 1809 * @driver_dump: driver dump struct 1810 * 1811 * Return value: 1812 * nothing 1813 **/ 1814static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg, 1815 struct ipr_driver_dump *driver_dump) 1816{ 1817 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 1818 1819 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr); 1820 driver_dump->ioa_type_entry.hdr.len = 1821 sizeof(struct ipr_dump_ioa_type_entry) - 1822 sizeof(struct ipr_dump_entry_header); 1823 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 1824 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID; 1825 driver_dump->ioa_type_entry.type = ioa_cfg->type; 1826 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) | 1827 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) | 1828 ucode_vpd->minor_release[1]; 1829 driver_dump->hdr.num_entries++; 1830} 1831 1832/** 1833 * ipr_dump_version_data - Fill in the driver version in the dump. 1834 * @ioa_cfg: ioa config struct 1835 * @driver_dump: driver dump struct 1836 * 1837 * Return value: 1838 * nothing 1839 **/ 1840static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg, 1841 struct ipr_driver_dump *driver_dump) 1842{ 1843 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr); 1844 driver_dump->version_entry.hdr.len = 1845 sizeof(struct ipr_dump_version_entry) - 1846 sizeof(struct ipr_dump_entry_header); 1847 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; 1848 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID; 1849 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION); 1850 driver_dump->hdr.num_entries++; 1851} 1852 1853/** 1854 * ipr_dump_trace_data - Fill in the IOA trace in the dump. 1855 * @ioa_cfg: ioa config struct 1856 * @driver_dump: driver dump struct 1857 * 1858 * Return value: 1859 * nothing 1860 **/ 1861static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg, 1862 struct ipr_driver_dump *driver_dump) 1863{ 1864 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr); 1865 driver_dump->trace_entry.hdr.len = 1866 sizeof(struct ipr_dump_trace_entry) - 1867 sizeof(struct ipr_dump_entry_header); 1868 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 1869 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID; 1870 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE); 1871 driver_dump->hdr.num_entries++; 1872} 1873 1874/** 1875 * ipr_dump_location_data - Fill in the IOA location in the dump. 1876 * @ioa_cfg: ioa config struct 1877 * @driver_dump: driver dump struct 1878 * 1879 * Return value: 1880 * nothing 1881 **/ 1882static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg, 1883 struct ipr_driver_dump *driver_dump) 1884{ 1885 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr); 1886 driver_dump->location_entry.hdr.len = 1887 sizeof(struct ipr_dump_location_entry) - 1888 sizeof(struct ipr_dump_entry_header); 1889 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; 1890 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID; 1891 strcpy(driver_dump->location_entry.location, ioa_cfg->pdev->dev.bus_id); 1892 driver_dump->hdr.num_entries++; 1893} 1894 1895/** 1896 * ipr_get_ioa_dump - Perform a dump of the driver and adapter. 1897 * @ioa_cfg: ioa config struct 1898 * @dump: dump struct 1899 * 1900 * Return value: 1901 * nothing 1902 **/ 1903static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump) 1904{ 1905 unsigned long start_addr, sdt_word; 1906 unsigned long lock_flags = 0; 1907 struct ipr_driver_dump *driver_dump = &dump->driver_dump; 1908 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump; 1909 u32 num_entries, start_off, end_off; 1910 u32 bytes_to_copy, bytes_copied, rc; 1911 struct ipr_sdt *sdt; 1912 int i; 1913 1914 ENTER; 1915 1916 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 1917 1918 if (ioa_cfg->sdt_state != GET_DUMP) { 1919 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 1920 return; 1921 } 1922 1923 start_addr = readl(ioa_cfg->ioa_mailbox); 1924 1925 if (!ipr_sdt_is_fmt2(start_addr)) { 1926 dev_err(&ioa_cfg->pdev->dev, 1927 "Invalid dump table format: %lx\n", start_addr); 1928 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 1929 return; 1930 } 1931 1932 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n"); 1933 1934 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER; 1935 1936 /* Initialize the overall dump header */ 1937 driver_dump->hdr.len = sizeof(struct ipr_driver_dump); 1938 driver_dump->hdr.num_entries = 1; 1939 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header); 1940 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS; 1941 driver_dump->hdr.os = IPR_DUMP_OS_LINUX; 1942 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME; 1943 1944 ipr_dump_version_data(ioa_cfg, driver_dump); 1945 ipr_dump_location_data(ioa_cfg, driver_dump); 1946 ipr_dump_ioa_type_data(ioa_cfg, driver_dump); 1947 ipr_dump_trace_data(ioa_cfg, driver_dump); 1948 1949 /* Update dump_header */ 1950 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header); 1951 1952 /* IOA Dump entry */ 1953 ipr_init_dump_entry_hdr(&ioa_dump->hdr); 1954 ioa_dump->format = IPR_SDT_FMT2; 1955 ioa_dump->hdr.len = 0; 1956 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 1957 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID; 1958 1959 /* First entries in sdt are actually a list of dump addresses and 1960 lengths to gather the real dump data. sdt represents the pointer 1961 to the ioa generated dump table. Dump data will be extracted based 1962 on entries in this table */ 1963 sdt = &ioa_dump->sdt; 1964 1965 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt, 1966 sizeof(struct ipr_sdt) / sizeof(__be32)); 1967 1968 /* Smart Dump table is ready to use and the first entry is valid */ 1969 if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) { 1970 dev_err(&ioa_cfg->pdev->dev, 1971 "Dump of IOA failed. Dump table not valid: %d, %X.\n", 1972 rc, be32_to_cpu(sdt->hdr.state)); 1973 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED; 1974 ioa_cfg->sdt_state = DUMP_OBTAINED; 1975 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 1976 return; 1977 } 1978 1979 num_entries = be32_to_cpu(sdt->hdr.num_entries_used); 1980 1981 if (num_entries > IPR_NUM_SDT_ENTRIES) 1982 num_entries = IPR_NUM_SDT_ENTRIES; 1983 1984 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 1985 1986 for (i = 0; i < num_entries; i++) { 1987 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) { 1988 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; 1989 break; 1990 } 1991 1992 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) { 1993 sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset); 1994 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK; 1995 end_off = be32_to_cpu(sdt->entry[i].end_offset); 1996 1997 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) { 1998 bytes_to_copy = end_off - start_off; 1999 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) { 2000 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY; 2001 continue; 2002 } 2003 2004 /* Copy data from adapter to driver buffers */ 2005 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word, 2006 bytes_to_copy); 2007 2008 ioa_dump->hdr.len += bytes_copied; 2009 2010 if (bytes_copied != bytes_to_copy) { 2011 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; 2012 break; 2013 } 2014 } 2015 } 2016 } 2017 2018 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n"); 2019 2020 /* Update dump_header */ 2021 driver_dump->hdr.len += ioa_dump->hdr.len; 2022 wmb(); 2023 ioa_cfg->sdt_state = DUMP_OBTAINED; 2024 LEAVE; 2025} 2026 2027#else 2028#define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0) 2029#endif 2030 2031/** 2032 * ipr_release_dump - Free adapter dump memory 2033 * @kref: kref struct 2034 * 2035 * Return value: 2036 * nothing 2037 **/ 2038static void ipr_release_dump(struct kref *kref) 2039{ 2040 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref); 2041 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg; 2042 unsigned long lock_flags = 0; 2043 int i; 2044 2045 ENTER; 2046 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2047 ioa_cfg->dump = NULL; 2048 ioa_cfg->sdt_state = INACTIVE; 2049 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2050 2051 for (i = 0; i < dump->ioa_dump.next_page_index; i++) 2052 free_page((unsigned long) dump->ioa_dump.ioa_data[i]); 2053 2054 kfree(dump); 2055 LEAVE; 2056} 2057 2058/** 2059 * ipr_worker_thread - Worker thread 2060 * @data: ioa config struct 2061 * 2062 * Called at task level from a work thread. This function takes care 2063 * of adding and removing device from the mid-layer as configuration 2064 * changes are detected by the adapter. 2065 * 2066 * Return value: 2067 * nothing 2068 **/ 2069static void ipr_worker_thread(void *data) 2070{ 2071 unsigned long lock_flags; 2072 struct ipr_resource_entry *res; 2073 struct scsi_device *sdev; 2074 struct ipr_dump *dump; 2075 struct ipr_ioa_cfg *ioa_cfg = data; 2076 u8 bus, target, lun; 2077 int did_work; 2078 2079 ENTER; 2080 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2081 2082 if (ioa_cfg->sdt_state == GET_DUMP) { 2083 dump = ioa_cfg->dump; 2084 if (!dump) { 2085 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2086 return; 2087 } 2088 kref_get(&dump->kref); 2089 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2090 ipr_get_ioa_dump(ioa_cfg, dump); 2091 kref_put(&dump->kref, ipr_release_dump); 2092 2093 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2094 if (ioa_cfg->sdt_state == DUMP_OBTAINED) 2095 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 2096 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2097 return; 2098 } 2099 2100restart: 2101 do { 2102 did_work = 0; 2103 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) { 2104 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2105 return; 2106 } 2107 2108 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 2109 if (res->del_from_ml && res->sdev) { 2110 did_work = 1; 2111 sdev = res->sdev; 2112 if (!scsi_device_get(sdev)) { 2113 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 2114 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2115 scsi_remove_device(sdev); 2116 scsi_device_put(sdev); 2117 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2118 } 2119 break; 2120 } 2121 } 2122 } while(did_work); 2123 2124 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 2125 if (res->add_to_ml) { 2126 bus = res->cfgte.res_addr.bus; 2127 target = res->cfgte.res_addr.target; 2128 lun = res->cfgte.res_addr.lun; 2129 res->add_to_ml = 0; 2130 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2131 scsi_add_device(ioa_cfg->host, bus, target, lun); 2132 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2133 goto restart; 2134 } 2135 } 2136 2137 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2138 kobject_uevent(&ioa_cfg->host->shost_classdev.kobj, KOBJ_CHANGE); 2139 LEAVE; 2140} 2141 2142#ifdef CONFIG_SCSI_IPR_TRACE 2143/** 2144 * ipr_read_trace - Dump the adapter trace 2145 * @kobj: kobject struct 2146 * @buf: buffer 2147 * @off: offset 2148 * @count: buffer size 2149 * 2150 * Return value: 2151 * number of bytes printed to buffer 2152 **/ 2153static ssize_t ipr_read_trace(struct kobject *kobj, char *buf, 2154 loff_t off, size_t count) 2155{ 2156 struct class_device *cdev = container_of(kobj,struct class_device,kobj); 2157 struct Scsi_Host *shost = class_to_shost(cdev); 2158 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2159 unsigned long lock_flags = 0; 2160 int size = IPR_TRACE_SIZE; 2161 char *src = (char *)ioa_cfg->trace; 2162 2163 if (off > size) 2164 return 0; 2165 if (off + count > size) { 2166 size -= off; 2167 count = size; 2168 } 2169 2170 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2171 memcpy(buf, &src[off], count); 2172 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2173 return count; 2174} 2175 2176static struct bin_attribute ipr_trace_attr = { 2177 .attr = { 2178 .name = "trace", 2179 .mode = S_IRUGO, 2180 }, 2181 .size = 0, 2182 .read = ipr_read_trace, 2183}; 2184#endif 2185 2186static const struct { 2187 enum ipr_cache_state state; 2188 char *name; 2189} cache_state [] = { 2190 { CACHE_NONE, "none" }, 2191 { CACHE_DISABLED, "disabled" }, 2192 { CACHE_ENABLED, "enabled" } 2193}; 2194 2195/** 2196 * ipr_show_write_caching - Show the write caching attribute 2197 * @class_dev: class device struct 2198 * @buf: buffer 2199 * 2200 * Return value: 2201 * number of bytes printed to buffer 2202 **/ 2203static ssize_t ipr_show_write_caching(struct class_device *class_dev, char *buf) 2204{ 2205 struct Scsi_Host *shost = class_to_shost(class_dev); 2206 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2207 unsigned long lock_flags = 0; 2208 int i, len = 0; 2209 2210 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2211 for (i = 0; i < ARRAY_SIZE(cache_state); i++) { 2212 if (cache_state[i].state == ioa_cfg->cache_state) { 2213 len = snprintf(buf, PAGE_SIZE, "%s\n", cache_state[i].name); 2214 break; 2215 } 2216 } 2217 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2218 return len; 2219} 2220 2221 2222/** 2223 * ipr_store_write_caching - Enable/disable adapter write cache 2224 * @class_dev: class_device struct 2225 * @buf: buffer 2226 * @count: buffer size 2227 * 2228 * This function will enable/disable adapter write cache. 2229 * 2230 * Return value: 2231 * count on success / other on failure 2232 **/ 2233static ssize_t ipr_store_write_caching(struct class_device *class_dev, 2234 const char *buf, size_t count) 2235{ 2236 struct Scsi_Host *shost = class_to_shost(class_dev); 2237 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2238 unsigned long lock_flags = 0; 2239 enum ipr_cache_state new_state = CACHE_INVALID; 2240 int i; 2241 2242 if (!capable(CAP_SYS_ADMIN)) 2243 return -EACCES; 2244 if (ioa_cfg->cache_state == CACHE_NONE) 2245 return -EINVAL; 2246 2247 for (i = 0; i < ARRAY_SIZE(cache_state); i++) { 2248 if (!strncmp(cache_state[i].name, buf, strlen(cache_state[i].name))) { 2249 new_state = cache_state[i].state; 2250 break; 2251 } 2252 } 2253 2254 if (new_state != CACHE_DISABLED && new_state != CACHE_ENABLED) 2255 return -EINVAL; 2256 2257 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2258 if (ioa_cfg->cache_state == new_state) { 2259 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2260 return count; 2261 } 2262 2263 ioa_cfg->cache_state = new_state; 2264 dev_info(&ioa_cfg->pdev->dev, "%s adapter write cache.\n", 2265 new_state == CACHE_ENABLED ? "Enabling" : "Disabling"); 2266 if (!ioa_cfg->in_reset_reload) 2267 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 2268 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2269 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2270 2271 return count; 2272} 2273 2274static struct class_device_attribute ipr_ioa_cache_attr = { 2275 .attr = { 2276 .name = "write_cache", 2277 .mode = S_IRUGO | S_IWUSR, 2278 }, 2279 .show = ipr_show_write_caching, 2280 .store = ipr_store_write_caching 2281}; 2282 2283/** 2284 * ipr_show_fw_version - Show the firmware version 2285 * @class_dev: class device struct 2286 * @buf: buffer 2287 * 2288 * Return value: 2289 * number of bytes printed to buffer 2290 **/ 2291static ssize_t ipr_show_fw_version(struct class_device *class_dev, char *buf) 2292{ 2293 struct Scsi_Host *shost = class_to_shost(class_dev); 2294 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2295 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 2296 unsigned long lock_flags = 0; 2297 int len; 2298 2299 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2300 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n", 2301 ucode_vpd->major_release, ucode_vpd->card_type, 2302 ucode_vpd->minor_release[0], 2303 ucode_vpd->minor_release[1]); 2304 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2305 return len; 2306} 2307 2308static struct class_device_attribute ipr_fw_version_attr = { 2309 .attr = { 2310 .name = "fw_version", 2311 .mode = S_IRUGO, 2312 }, 2313 .show = ipr_show_fw_version, 2314}; 2315 2316/** 2317 * ipr_show_log_level - Show the adapter's error logging level 2318 * @class_dev: class device struct 2319 * @buf: buffer 2320 * 2321 * Return value: 2322 * number of bytes printed to buffer 2323 **/ 2324static ssize_t ipr_show_log_level(struct class_device *class_dev, char *buf) 2325{ 2326 struct Scsi_Host *shost = class_to_shost(class_dev); 2327 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2328 unsigned long lock_flags = 0; 2329 int len; 2330 2331 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2332 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level); 2333 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2334 return len; 2335} 2336 2337/** 2338 * ipr_store_log_level - Change the adapter's error logging level 2339 * @class_dev: class device struct 2340 * @buf: buffer 2341 * 2342 * Return value: 2343 * number of bytes printed to buffer 2344 **/ 2345static ssize_t ipr_store_log_level(struct class_device *class_dev, 2346 const char *buf, size_t count) 2347{ 2348 struct Scsi_Host *shost = class_to_shost(class_dev); 2349 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2350 unsigned long lock_flags = 0; 2351 2352 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2353 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10); 2354 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2355 return strlen(buf); 2356} 2357 2358static struct class_device_attribute ipr_log_level_attr = { 2359 .attr = { 2360 .name = "log_level", 2361 .mode = S_IRUGO | S_IWUSR, 2362 }, 2363 .show = ipr_show_log_level, 2364 .store = ipr_store_log_level 2365}; 2366 2367/** 2368 * ipr_store_diagnostics - IOA Diagnostics interface 2369 * @class_dev: class_device struct 2370 * @buf: buffer 2371 * @count: buffer size 2372 * 2373 * This function will reset the adapter and wait a reasonable 2374 * amount of time for any errors that the adapter might log. 2375 * 2376 * Return value: 2377 * count on success / other on failure 2378 **/ 2379static ssize_t ipr_store_diagnostics(struct class_device *class_dev, 2380 const char *buf, size_t count) 2381{ 2382 struct Scsi_Host *shost = class_to_shost(class_dev); 2383 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2384 unsigned long lock_flags = 0; 2385 int rc = count; 2386 2387 if (!capable(CAP_SYS_ADMIN)) 2388 return -EACCES; 2389 2390 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2391 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2392 ioa_cfg->errors_logged = 0; 2393 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 2394 2395 if (ioa_cfg->in_reset_reload) { 2396 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2397 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2398 2399 /* Wait for a second for any errors to be logged */ 2400 msleep(1000); 2401 } else { 2402 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2403 return -EIO; 2404 } 2405 2406 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2407 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged) 2408 rc = -EIO; 2409 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2410 2411 return rc; 2412} 2413 2414static struct class_device_attribute ipr_diagnostics_attr = { 2415 .attr = { 2416 .name = "run_diagnostics", 2417 .mode = S_IWUSR, 2418 }, 2419 .store = ipr_store_diagnostics 2420}; 2421 2422/** 2423 * ipr_show_adapter_state - Show the adapter's state 2424 * @class_dev: class device struct 2425 * @buf: buffer 2426 * 2427 * Return value: 2428 * number of bytes printed to buffer 2429 **/ 2430static ssize_t ipr_show_adapter_state(struct class_device *class_dev, char *buf) 2431{ 2432 struct Scsi_Host *shost = class_to_shost(class_dev); 2433 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2434 unsigned long lock_flags = 0; 2435 int len; 2436 2437 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2438 if (ioa_cfg->ioa_is_dead) 2439 len = snprintf(buf, PAGE_SIZE, "offline\n"); 2440 else 2441 len = snprintf(buf, PAGE_SIZE, "online\n"); 2442 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2443 return len; 2444} 2445 2446/** 2447 * ipr_store_adapter_state - Change adapter state 2448 * @class_dev: class_device struct 2449 * @buf: buffer 2450 * @count: buffer size 2451 * 2452 * This function will change the adapter's state. 2453 * 2454 * Return value: 2455 * count on success / other on failure 2456 **/ 2457static ssize_t ipr_store_adapter_state(struct class_device *class_dev, 2458 const char *buf, size_t count) 2459{ 2460 struct Scsi_Host *shost = class_to_shost(class_dev); 2461 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2462 unsigned long lock_flags; 2463 int result = count; 2464 2465 if (!capable(CAP_SYS_ADMIN)) 2466 return -EACCES; 2467 2468 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2469 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) { 2470 ioa_cfg->ioa_is_dead = 0; 2471 ioa_cfg->reset_retries = 0; 2472 ioa_cfg->in_ioa_bringdown = 0; 2473 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 2474 } 2475 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2476 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2477 2478 return result; 2479} 2480 2481static struct class_device_attribute ipr_ioa_state_attr = { 2482 .attr = { 2483 .name = "state", 2484 .mode = S_IRUGO | S_IWUSR, 2485 }, 2486 .show = ipr_show_adapter_state, 2487 .store = ipr_store_adapter_state 2488}; 2489 2490/** 2491 * ipr_store_reset_adapter - Reset the adapter 2492 * @class_dev: class_device struct 2493 * @buf: buffer 2494 * @count: buffer size 2495 * 2496 * This function will reset the adapter. 2497 * 2498 * Return value: 2499 * count on success / other on failure 2500 **/ 2501static ssize_t ipr_store_reset_adapter(struct class_device *class_dev, 2502 const char *buf, size_t count) 2503{ 2504 struct Scsi_Host *shost = class_to_shost(class_dev); 2505 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2506 unsigned long lock_flags; 2507 int result = count; 2508 2509 if (!capable(CAP_SYS_ADMIN)) 2510 return -EACCES; 2511 2512 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2513 if (!ioa_cfg->in_reset_reload) 2514 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 2515 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2516 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2517 2518 return result; 2519} 2520 2521static struct class_device_attribute ipr_ioa_reset_attr = { 2522 .attr = { 2523 .name = "reset_host", 2524 .mode = S_IWUSR, 2525 }, 2526 .store = ipr_store_reset_adapter 2527}; 2528 2529/** 2530 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer 2531 * @buf_len: buffer length 2532 * 2533 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather 2534 * list to use for microcode download 2535 * 2536 * Return value: 2537 * pointer to sglist / NULL on failure 2538 **/ 2539static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len) 2540{ 2541 int sg_size, order, bsize_elem, num_elem, i, j; 2542 struct ipr_sglist *sglist; 2543 struct scatterlist *scatterlist; 2544 struct page *page; 2545 2546 /* Get the minimum size per scatter/gather element */ 2547 sg_size = buf_len / (IPR_MAX_SGLIST - 1); 2548 2549 /* Get the actual size per element */ 2550 order = get_order(sg_size); 2551 2552 /* Determine the actual number of bytes per element */ 2553 bsize_elem = PAGE_SIZE * (1 << order); 2554 2555 /* Determine the actual number of sg entries needed */ 2556 if (buf_len % bsize_elem) 2557 num_elem = (buf_len / bsize_elem) + 1; 2558 else 2559 num_elem = buf_len / bsize_elem; 2560 2561 /* Allocate a scatter/gather list for the DMA */ 2562 sglist = kzalloc(sizeof(struct ipr_sglist) + 2563 (sizeof(struct scatterlist) * (num_elem - 1)), 2564 GFP_KERNEL); 2565 2566 if (sglist == NULL) { 2567 ipr_trace; 2568 return NULL; 2569 } 2570 2571 scatterlist = sglist->scatterlist; 2572 2573 sglist->order = order; 2574 sglist->num_sg = num_elem; 2575 2576 /* Allocate a bunch of sg elements */ 2577 for (i = 0; i < num_elem; i++) { 2578 page = alloc_pages(GFP_KERNEL, order); 2579 if (!page) { 2580 ipr_trace; 2581 2582 /* Free up what we already allocated */ 2583 for (j = i - 1; j >= 0; j--) 2584 __free_pages(scatterlist[j].page, order); 2585 kfree(sglist); 2586 return NULL; 2587 } 2588 2589 scatterlist[i].page = page; 2590 } 2591 2592 return sglist; 2593} 2594 2595/** 2596 * ipr_free_ucode_buffer - Frees a microcode download buffer 2597 * @p_dnld: scatter/gather list pointer 2598 * 2599 * Free a DMA'able ucode download buffer previously allocated with 2600 * ipr_alloc_ucode_buffer 2601 * 2602 * Return value: 2603 * nothing 2604 **/ 2605static void ipr_free_ucode_buffer(struct ipr_sglist *sglist) 2606{ 2607 int i; 2608 2609 for (i = 0; i < sglist->num_sg; i++) 2610 __free_pages(sglist->scatterlist[i].page, sglist->order); 2611 2612 kfree(sglist); 2613} 2614 2615/** 2616 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer 2617 * @sglist: scatter/gather list pointer 2618 * @buffer: buffer pointer 2619 * @len: buffer length 2620 * 2621 * Copy a microcode image from a user buffer into a buffer allocated by 2622 * ipr_alloc_ucode_buffer 2623 * 2624 * Return value: 2625 * 0 on success / other on failure 2626 **/ 2627static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist, 2628 u8 *buffer, u32 len) 2629{ 2630 int bsize_elem, i, result = 0; 2631 struct scatterlist *scatterlist; 2632 void *kaddr; 2633 2634 /* Determine the actual number of bytes per element */ 2635 bsize_elem = PAGE_SIZE * (1 << sglist->order); 2636 2637 scatterlist = sglist->scatterlist; 2638 2639 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) { 2640 kaddr = kmap(scatterlist[i].page); 2641 memcpy(kaddr, buffer, bsize_elem); 2642 kunmap(scatterlist[i].page); 2643 2644 scatterlist[i].length = bsize_elem; 2645 2646 if (result != 0) { 2647 ipr_trace; 2648 return result; 2649 } 2650 } 2651 2652 if (len % bsize_elem) { 2653 kaddr = kmap(scatterlist[i].page); 2654 memcpy(kaddr, buffer, len % bsize_elem); 2655 kunmap(scatterlist[i].page); 2656 2657 scatterlist[i].length = len % bsize_elem; 2658 } 2659 2660 sglist->buffer_len = len; 2661 return result; 2662} 2663 2664/** 2665 * ipr_build_ucode_ioadl - Build a microcode download IOADL 2666 * @ipr_cmd: ipr command struct 2667 * @sglist: scatter/gather list 2668 * 2669 * Builds a microcode download IOA data list (IOADL). 2670 * 2671 **/ 2672static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd, 2673 struct ipr_sglist *sglist) 2674{ 2675 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 2676 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 2677 struct scatterlist *scatterlist = sglist->scatterlist; 2678 int i; 2679 2680 ipr_cmd->dma_use_sg = sglist->num_dma_sg; 2681 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 2682 ioarcb->write_data_transfer_length = cpu_to_be32(sglist->buffer_len); 2683 ioarcb->write_ioadl_len = 2684 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 2685 2686 for (i = 0; i < ipr_cmd->dma_use_sg; i++) { 2687 ioadl[i].flags_and_data_len = 2688 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i])); 2689 ioadl[i].address = 2690 cpu_to_be32(sg_dma_address(&scatterlist[i])); 2691 } 2692 2693 ioadl[i-1].flags_and_data_len |= 2694 cpu_to_be32(IPR_IOADL_FLAGS_LAST); 2695} 2696 2697/** 2698 * ipr_update_ioa_ucode - Update IOA's microcode 2699 * @ioa_cfg: ioa config struct 2700 * @sglist: scatter/gather list 2701 * 2702 * Initiate an adapter reset to update the IOA's microcode 2703 * 2704 * Return value: 2705 * 0 on success / -EIO on failure 2706 **/ 2707static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg, 2708 struct ipr_sglist *sglist) 2709{ 2710 unsigned long lock_flags; 2711 2712 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2713 2714 if (ioa_cfg->ucode_sglist) { 2715 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2716 dev_err(&ioa_cfg->pdev->dev, 2717 "Microcode download already in progress\n"); 2718 return -EIO; 2719 } 2720 2721 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist, 2722 sglist->num_sg, DMA_TO_DEVICE); 2723 2724 if (!sglist->num_dma_sg) { 2725 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2726 dev_err(&ioa_cfg->pdev->dev, 2727 "Failed to map microcode download buffer!\n"); 2728 return -EIO; 2729 } 2730 2731 ioa_cfg->ucode_sglist = sglist; 2732 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 2733 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2734 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2735 2736 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2737 ioa_cfg->ucode_sglist = NULL; 2738 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2739 return 0; 2740} 2741 2742/** 2743 * ipr_store_update_fw - Update the firmware on the adapter 2744 * @class_dev: class_device struct 2745 * @buf: buffer 2746 * @count: buffer size 2747 * 2748 * This function will update the firmware on the adapter. 2749 * 2750 * Return value: 2751 * count on success / other on failure 2752 **/ 2753static ssize_t ipr_store_update_fw(struct class_device *class_dev, 2754 const char *buf, size_t count) 2755{ 2756 struct Scsi_Host *shost = class_to_shost(class_dev); 2757 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2758 struct ipr_ucode_image_header *image_hdr; 2759 const struct firmware *fw_entry; 2760 struct ipr_sglist *sglist; 2761 char fname[100]; 2762 char *src; 2763 int len, result, dnld_size; 2764 2765 if (!capable(CAP_SYS_ADMIN)) 2766 return -EACCES; 2767 2768 len = snprintf(fname, 99, "%s", buf); 2769 fname[len-1] = '\0'; 2770 2771 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) { 2772 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname); 2773 return -EIO; 2774 } 2775 2776 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data; 2777 2778 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size || 2779 (ioa_cfg->vpd_cbs->page3_data.card_type && 2780 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) { 2781 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n"); 2782 release_firmware(fw_entry); 2783 return -EINVAL; 2784 } 2785 2786 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length); 2787 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length); 2788 sglist = ipr_alloc_ucode_buffer(dnld_size); 2789 2790 if (!sglist) { 2791 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n"); 2792 release_firmware(fw_entry); 2793 return -ENOMEM; 2794 } 2795 2796 result = ipr_copy_ucode_buffer(sglist, src, dnld_size); 2797 2798 if (result) { 2799 dev_err(&ioa_cfg->pdev->dev, 2800 "Microcode buffer copy to DMA buffer failed\n"); 2801 goto out; 2802 } 2803 2804 result = ipr_update_ioa_ucode(ioa_cfg, sglist); 2805 2806 if (!result) 2807 result = count; 2808out: 2809 ipr_free_ucode_buffer(sglist); 2810 release_firmware(fw_entry); 2811 return result; 2812} 2813 2814static struct class_device_attribute ipr_update_fw_attr = { 2815 .attr = { 2816 .name = "update_fw", 2817 .mode = S_IWUSR, 2818 }, 2819 .store = ipr_store_update_fw 2820}; 2821 2822static struct class_device_attribute *ipr_ioa_attrs[] = { 2823 &ipr_fw_version_attr, 2824 &ipr_log_level_attr, 2825 &ipr_diagnostics_attr, 2826 &ipr_ioa_state_attr, 2827 &ipr_ioa_reset_attr, 2828 &ipr_update_fw_attr, 2829 &ipr_ioa_cache_attr, 2830 NULL, 2831}; 2832 2833#ifdef CONFIG_SCSI_IPR_DUMP 2834/** 2835 * ipr_read_dump - Dump the adapter 2836 * @kobj: kobject struct 2837 * @buf: buffer 2838 * @off: offset 2839 * @count: buffer size 2840 * 2841 * Return value: 2842 * number of bytes printed to buffer 2843 **/ 2844static ssize_t ipr_read_dump(struct kobject *kobj, char *buf, 2845 loff_t off, size_t count) 2846{ 2847 struct class_device *cdev = container_of(kobj,struct class_device,kobj); 2848 struct Scsi_Host *shost = class_to_shost(cdev); 2849 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2850 struct ipr_dump *dump; 2851 unsigned long lock_flags = 0; 2852 char *src; 2853 int len; 2854 size_t rc = count; 2855 2856 if (!capable(CAP_SYS_ADMIN)) 2857 return -EACCES; 2858 2859 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2860 dump = ioa_cfg->dump; 2861 2862 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) { 2863 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2864 return 0; 2865 } 2866 kref_get(&dump->kref); 2867 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2868 2869 if (off > dump->driver_dump.hdr.len) { 2870 kref_put(&dump->kref, ipr_release_dump); 2871 return 0; 2872 } 2873 2874 if (off + count > dump->driver_dump.hdr.len) { 2875 count = dump->driver_dump.hdr.len - off; 2876 rc = count; 2877 } 2878 2879 if (count && off < sizeof(dump->driver_dump)) { 2880 if (off + count > sizeof(dump->driver_dump)) 2881 len = sizeof(dump->driver_dump) - off; 2882 else 2883 len = count; 2884 src = (u8 *)&dump->driver_dump + off; 2885 memcpy(buf, src, len); 2886 buf += len; 2887 off += len; 2888 count -= len; 2889 } 2890 2891 off -= sizeof(dump->driver_dump); 2892 2893 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) { 2894 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data)) 2895 len = offsetof(struct ipr_ioa_dump, ioa_data) - off; 2896 else 2897 len = count; 2898 src = (u8 *)&dump->ioa_dump + off; 2899 memcpy(buf, src, len); 2900 buf += len; 2901 off += len; 2902 count -= len; 2903 } 2904 2905 off -= offsetof(struct ipr_ioa_dump, ioa_data); 2906 2907 while (count) { 2908 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK)) 2909 len = PAGE_ALIGN(off) - off; 2910 else 2911 len = count; 2912 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT]; 2913 src += off & ~PAGE_MASK; 2914 memcpy(buf, src, len); 2915 buf += len; 2916 off += len; 2917 count -= len; 2918 } 2919 2920 kref_put(&dump->kref, ipr_release_dump); 2921 return rc; 2922} 2923 2924/** 2925 * ipr_alloc_dump - Prepare for adapter dump 2926 * @ioa_cfg: ioa config struct 2927 * 2928 * Return value: 2929 * 0 on success / other on failure 2930 **/ 2931static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg) 2932{ 2933 struct ipr_dump *dump; 2934 unsigned long lock_flags = 0; 2935 2936 ENTER; 2937 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL); 2938 2939 if (!dump) { 2940 ipr_err("Dump memory allocation failed\n"); 2941 return -ENOMEM; 2942 } 2943 2944 kref_init(&dump->kref); 2945 dump->ioa_cfg = ioa_cfg; 2946 2947 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2948 2949 if (INACTIVE != ioa_cfg->sdt_state) { 2950 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2951 kfree(dump); 2952 return 0; 2953 } 2954 2955 ioa_cfg->dump = dump; 2956 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 2957 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) { 2958 ioa_cfg->dump_taken = 1; 2959 schedule_work(&ioa_cfg->work_q); 2960 } 2961 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2962 2963 LEAVE; 2964 return 0; 2965} 2966 2967/** 2968 * ipr_free_dump - Free adapter dump memory 2969 * @ioa_cfg: ioa config struct 2970 * 2971 * Return value: 2972 * 0 on success / other on failure 2973 **/ 2974static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) 2975{ 2976 struct ipr_dump *dump; 2977 unsigned long lock_flags = 0; 2978 2979 ENTER; 2980 2981 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2982 dump = ioa_cfg->dump; 2983 if (!dump) { 2984 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2985 return 0; 2986 } 2987 2988 ioa_cfg->dump = NULL; 2989 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2990 2991 kref_put(&dump->kref, ipr_release_dump); 2992 2993 LEAVE; 2994 return 0; 2995} 2996 2997/** 2998 * ipr_write_dump - Setup dump state of adapter 2999 * @kobj: kobject struct 3000 * @buf: buffer 3001 * @off: offset 3002 * @count: buffer size 3003 * 3004 * Return value: 3005 * number of bytes printed to buffer 3006 **/ 3007static ssize_t ipr_write_dump(struct kobject *kobj, char *buf, 3008 loff_t off, size_t count) 3009{ 3010 struct class_device *cdev = container_of(kobj,struct class_device,kobj); 3011 struct Scsi_Host *shost = class_to_shost(cdev); 3012 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3013 int rc; 3014 3015 if (!capable(CAP_SYS_ADMIN)) 3016 return -EACCES; 3017 3018 if (buf[0] == '1') 3019 rc = ipr_alloc_dump(ioa_cfg); 3020 else if (buf[0] == '0') 3021 rc = ipr_free_dump(ioa_cfg); 3022 else 3023 return -EINVAL; 3024 3025 if (rc) 3026 return rc; 3027 else 3028 return count; 3029} 3030 3031static struct bin_attribute ipr_dump_attr = { 3032 .attr = { 3033 .name = "dump", 3034 .mode = S_IRUSR | S_IWUSR, 3035 }, 3036 .size = 0, 3037 .read = ipr_read_dump, 3038 .write = ipr_write_dump 3039}; 3040#else 3041static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; }; 3042#endif 3043 3044/** 3045 * ipr_change_queue_depth - Change the device's queue depth 3046 * @sdev: scsi device struct 3047 * @qdepth: depth to set 3048 * 3049 * Return value: 3050 * actual depth set 3051 **/ 3052static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth) 3053{ 3054 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth); 3055 return sdev->queue_depth; 3056} 3057 3058/** 3059 * ipr_change_queue_type - Change the device's queue type 3060 * @dsev: scsi device struct 3061 * @tag_type: type of tags to use 3062 * 3063 * Return value: 3064 * actual queue type set 3065 **/ 3066static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type) 3067{ 3068 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 3069 struct ipr_resource_entry *res; 3070 unsigned long lock_flags = 0; 3071 3072 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3073 res = (struct ipr_resource_entry *)sdev->hostdata; 3074 3075 if (res) { 3076 if (ipr_is_gscsi(res) && sdev->tagged_supported) { 3077 /* 3078 * We don't bother quiescing the device here since the 3079 * adapter firmware does it for us. 3080 */ 3081 scsi_set_tag_type(sdev, tag_type); 3082 3083 if (tag_type) 3084 scsi_activate_tcq(sdev, sdev->queue_depth); 3085 else 3086 scsi_deactivate_tcq(sdev, sdev->queue_depth); 3087 } else 3088 tag_type = 0; 3089 } else 3090 tag_type = 0; 3091 3092 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3093 return tag_type; 3094} 3095 3096/** 3097 * ipr_show_adapter_handle - Show the adapter's resource handle for this device 3098 * @dev: device struct 3099 * @buf: buffer 3100 * 3101 * Return value: 3102 * number of bytes printed to buffer 3103 **/ 3104static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf) 3105{ 3106 struct scsi_device *sdev = to_scsi_device(dev); 3107 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 3108 struct ipr_resource_entry *res; 3109 unsigned long lock_flags = 0; 3110 ssize_t len = -ENXIO; 3111 3112 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3113 res = (struct ipr_resource_entry *)sdev->hostdata; 3114 if (res) 3115 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle); 3116 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3117 return len; 3118} 3119 3120static struct device_attribute ipr_adapter_handle_attr = { 3121 .attr = { 3122 .name = "adapter_handle", 3123 .mode = S_IRUSR, 3124 }, 3125 .show = ipr_show_adapter_handle 3126}; 3127 3128static struct device_attribute *ipr_dev_attrs[] = { 3129 &ipr_adapter_handle_attr, 3130 NULL, 3131}; 3132 3133/** 3134 * ipr_biosparam - Return the HSC mapping 3135 * @sdev: scsi device struct 3136 * @block_device: block device pointer 3137 * @capacity: capacity of the device 3138 * @parm: Array containing returned HSC values. 3139 * 3140 * This function generates the HSC parms that fdisk uses. 3141 * We want to make sure we return something that places partitions 3142 * on 4k boundaries for best performance with the IOA. 3143 * 3144 * Return value: 3145 * 0 on success 3146 **/ 3147static int ipr_biosparam(struct scsi_device *sdev, 3148 struct block_device *block_device, 3149 sector_t capacity, int *parm) 3150{ 3151 int heads, sectors; 3152 sector_t cylinders; 3153 3154 heads = 128; 3155 sectors = 32; 3156 3157 cylinders = capacity; 3158 sector_div(cylinders, (128 * 32)); 3159 3160 /* return result */ 3161 parm[0] = heads; 3162 parm[1] = sectors; 3163 parm[2] = cylinders; 3164 3165 return 0; 3166} 3167 3168/** 3169 * ipr_slave_destroy - Unconfigure a SCSI device 3170 * @sdev: scsi device struct 3171 * 3172 * Return value: 3173 * nothing 3174 **/ 3175static void ipr_slave_destroy(struct scsi_device *sdev) 3176{ 3177 struct ipr_resource_entry *res; 3178 struct ipr_ioa_cfg *ioa_cfg; 3179 unsigned long lock_flags = 0; 3180 3181 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 3182 3183 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3184 res = (struct ipr_resource_entry *) sdev->hostdata; 3185 if (res) { 3186 sdev->hostdata = NULL; 3187 res->sdev = NULL; 3188 } 3189 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3190} 3191 3192/** 3193 * ipr_slave_configure - Configure a SCSI device 3194 * @sdev: scsi device struct 3195 * 3196 * This function configures the specified scsi device. 3197 * 3198 * Return value: 3199 * 0 on success 3200 **/ 3201static int ipr_slave_configure(struct scsi_device *sdev) 3202{ 3203 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 3204 struct ipr_resource_entry *res; 3205 unsigned long lock_flags = 0; 3206 3207 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3208 res = sdev->hostdata; 3209 if (res) { 3210 if (ipr_is_af_dasd_device(res)) 3211 sdev->type = TYPE_RAID; 3212 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) { 3213 sdev->scsi_level = 4; 3214 sdev->no_uld_attach = 1; 3215 } 3216 if (ipr_is_vset_device(res)) { 3217 sdev->timeout = IPR_VSET_RW_TIMEOUT; 3218 blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS); 3219 } 3220 if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res)) 3221 sdev->allow_restart = 1; 3222 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun); 3223 } 3224 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3225 return 0; 3226} 3227 3228/** 3229 * ipr_slave_alloc - Prepare for commands to a device. 3230 * @sdev: scsi device struct 3231 * 3232 * This function saves a pointer to the resource entry 3233 * in the scsi device struct if the device exists. We 3234 * can then use this pointer in ipr_queuecommand when 3235 * handling new commands. 3236 * 3237 * Return value: 3238 * 0 on success / -ENXIO if device does not exist 3239 **/ 3240static int ipr_slave_alloc(struct scsi_device *sdev) 3241{ 3242 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 3243 struct ipr_resource_entry *res; 3244 unsigned long lock_flags; 3245 int rc = -ENXIO; 3246 3247 sdev->hostdata = NULL; 3248 3249 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3250 3251 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3252 if ((res->cfgte.res_addr.bus == sdev->channel) && 3253 (res->cfgte.res_addr.target == sdev->id) && 3254 (res->cfgte.res_addr.lun == sdev->lun)) { 3255 res->sdev = sdev; 3256 res->add_to_ml = 0; 3257 res->in_erp = 0; 3258 sdev->hostdata = res; 3259 if (!ipr_is_naca_model(res)) 3260 res->needs_sync_complete = 1; 3261 rc = 0; 3262 break; 3263 } 3264 } 3265 3266 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3267 3268 return rc; 3269} 3270 3271/** 3272 * ipr_eh_host_reset - Reset the host adapter 3273 * @scsi_cmd: scsi command struct 3274 * 3275 * Return value: 3276 * SUCCESS / FAILED 3277 **/ 3278static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd) 3279{ 3280 struct ipr_ioa_cfg *ioa_cfg; 3281 int rc; 3282 3283 ENTER; 3284 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 3285 3286 dev_err(&ioa_cfg->pdev->dev, 3287 "Adapter being reset as a result of error recovery.\n"); 3288 3289 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 3290 ioa_cfg->sdt_state = GET_DUMP; 3291 3292 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV); 3293 3294 LEAVE; 3295 return rc; 3296} 3297 3298static int ipr_eh_host_reset(struct scsi_cmnd * cmd) 3299{ 3300 int rc; 3301 3302 spin_lock_irq(cmd->device->host->host_lock); 3303 rc = __ipr_eh_host_reset(cmd); 3304 spin_unlock_irq(cmd->device->host->host_lock); 3305 3306 return rc; 3307} 3308 3309/** 3310 * ipr_device_reset - Reset the device 3311 * @ioa_cfg: ioa config struct 3312 * @res: resource entry struct 3313 * 3314 * This function issues a device reset to the affected device. 3315 * If the device is a SCSI device, a LUN reset will be sent 3316 * to the device first. If that does not work, a target reset 3317 * will be sent. 3318 * 3319 * Return value: 3320 * 0 on success / non-zero on failure 3321 **/ 3322static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg, 3323 struct ipr_resource_entry *res) 3324{ 3325 struct ipr_cmnd *ipr_cmd; 3326 struct ipr_ioarcb *ioarcb; 3327 struct ipr_cmd_pkt *cmd_pkt; 3328 u32 ioasc; 3329 3330 ENTER; 3331 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 3332 ioarcb = &ipr_cmd->ioarcb; 3333 cmd_pkt = &ioarcb->cmd_pkt; 3334 3335 ioarcb->res_handle = res->cfgte.res_handle; 3336 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 3337 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 3338 3339 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 3340 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 3341 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 3342 3343 LEAVE; 3344 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0); 3345} 3346 3347/** 3348 * ipr_eh_dev_reset - Reset the device 3349 * @scsi_cmd: scsi command struct 3350 * 3351 * This function issues a device reset to the affected device. 3352 * A LUN reset will be sent to the device first. If that does 3353 * not work, a target reset will be sent. 3354 * 3355 * Return value: 3356 * SUCCESS / FAILED 3357 **/ 3358static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd) 3359{ 3360 struct ipr_cmnd *ipr_cmd; 3361 struct ipr_ioa_cfg *ioa_cfg; 3362 struct ipr_resource_entry *res; 3363 int rc; 3364 3365 ENTER; 3366 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 3367 res = scsi_cmd->device->hostdata; 3368 3369 if (!res) 3370 return FAILED; 3371 3372 /* 3373 * If we are currently going through reset/reload, return failed. This will force the 3374 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the 3375 * reset to complete 3376 */ 3377 if (ioa_cfg->in_reset_reload) 3378 return FAILED; 3379 if (ioa_cfg->ioa_is_dead) 3380 return FAILED; 3381 3382 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 3383 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) { 3384 if (ipr_cmd->scsi_cmd) 3385 ipr_cmd->done = ipr_scsi_eh_done; 3386 } 3387 } 3388 3389 res->resetting_device = 1; 3390 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n"); 3391 rc = ipr_device_reset(ioa_cfg, res); 3392 res->resetting_device = 0; 3393 3394 LEAVE; 3395 return (rc ? FAILED : SUCCESS); 3396} 3397 3398static int ipr_eh_dev_reset(struct scsi_cmnd * cmd) 3399{ 3400 int rc; 3401 3402 spin_lock_irq(cmd->device->host->host_lock); 3403 rc = __ipr_eh_dev_reset(cmd); 3404 spin_unlock_irq(cmd->device->host->host_lock); 3405 3406 return rc; 3407} 3408 3409/** 3410 * ipr_bus_reset_done - Op done function for bus reset. 3411 * @ipr_cmd: ipr command struct 3412 * 3413 * This function is the op done function for a bus reset 3414 * 3415 * Return value: 3416 * none 3417 **/ 3418static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd) 3419{ 3420 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 3421 struct ipr_resource_entry *res; 3422 3423 ENTER; 3424 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3425 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle, 3426 sizeof(res->cfgte.res_handle))) { 3427 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus); 3428 break; 3429 } 3430 } 3431 3432 /* 3433 * If abort has not completed, indicate the reset has, else call the 3434 * abort's done function to wake the sleeping eh thread 3435 */ 3436 if (ipr_cmd->sibling->sibling) 3437 ipr_cmd->sibling->sibling = NULL; 3438 else 3439 ipr_cmd->sibling->done(ipr_cmd->sibling); 3440 3441 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 3442 LEAVE; 3443} 3444 3445/** 3446 * ipr_abort_timeout - An abort task has timed out 3447 * @ipr_cmd: ipr command struct 3448 * 3449 * This function handles when an abort task times out. If this 3450 * happens we issue a bus reset since we have resources tied 3451 * up that must be freed before returning to the midlayer. 3452 * 3453 * Return value: 3454 * none 3455 **/ 3456static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd) 3457{ 3458 struct ipr_cmnd *reset_cmd; 3459 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 3460 struct ipr_cmd_pkt *cmd_pkt; 3461 unsigned long lock_flags = 0; 3462 3463 ENTER; 3464 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3465 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) { 3466 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3467 return; 3468 } 3469 3470 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n"); 3471 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 3472 ipr_cmd->sibling = reset_cmd; 3473 reset_cmd->sibling = ipr_cmd; 3474 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle; 3475 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt; 3476 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 3477 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 3478 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET; 3479 3480 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 3481 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3482 LEAVE; 3483} 3484 3485/** 3486 * ipr_cancel_op - Cancel specified op 3487 * @scsi_cmd: scsi command struct 3488 * 3489 * This function cancels specified op. 3490 * 3491 * Return value: 3492 * SUCCESS / FAILED 3493 **/ 3494static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd) 3495{ 3496 struct ipr_cmnd *ipr_cmd; 3497 struct ipr_ioa_cfg *ioa_cfg; 3498 struct ipr_resource_entry *res; 3499 struct ipr_cmd_pkt *cmd_pkt; 3500 u32 ioasc; 3501 int op_found = 0; 3502 3503 ENTER; 3504 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; 3505 res = scsi_cmd->device->hostdata; 3506 3507 /* If we are currently going through reset/reload, return failed. 3508 * This will force the mid-layer to call ipr_eh_host_reset, 3509 * which will then go to sleep and wait for the reset to complete 3510 */ 3511 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead) 3512 return FAILED; 3513 if (!res || (!ipr_is_gscsi(res) && !ipr_is_vset_device(res))) 3514 return FAILED; 3515 3516 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 3517 if (ipr_cmd->scsi_cmd == scsi_cmd) { 3518 ipr_cmd->done = ipr_scsi_eh_done; 3519 op_found = 1; 3520 break; 3521 } 3522 } 3523 3524 if (!op_found) 3525 return SUCCESS; 3526 3527 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 3528 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle; 3529 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 3530 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 3531 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 3532 ipr_cmd->u.sdev = scsi_cmd->device; 3533 3534 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n", 3535 scsi_cmd->cmnd[0]); 3536 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT); 3537 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 3538 3539 /* 3540 * If the abort task timed out and we sent a bus reset, we will get 3541 * one the following responses to the abort 3542 */ 3543 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) { 3544 ioasc = 0; 3545 ipr_trace; 3546 } 3547 3548 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 3549 if (!ipr_is_naca_model(res)) 3550 res->needs_sync_complete = 1; 3551 3552 LEAVE; 3553 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS); 3554} 3555 3556/** 3557 * ipr_eh_abort - Abort a single op 3558 * @scsi_cmd: scsi command struct 3559 * 3560 * Return value: 3561 * SUCCESS / FAILED 3562 **/ 3563static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd) 3564{ 3565 unsigned long flags; 3566 int rc; 3567 3568 ENTER; 3569 3570 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags); 3571 rc = ipr_cancel_op(scsi_cmd); 3572 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags); 3573 3574 LEAVE; 3575 return rc; 3576} 3577 3578/** 3579 * ipr_handle_other_interrupt - Handle "other" interrupts 3580 * @ioa_cfg: ioa config struct 3581 * @int_reg: interrupt register 3582 * 3583 * Return value: 3584 * IRQ_NONE / IRQ_HANDLED 3585 **/ 3586static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg, 3587 volatile u32 int_reg) 3588{ 3589 irqreturn_t rc = IRQ_HANDLED; 3590 3591 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 3592 /* Mask the interrupt */ 3593 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg); 3594 3595 /* Clear the interrupt */ 3596 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg); 3597 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 3598 3599 list_del(&ioa_cfg->reset_cmd->queue); 3600 del_timer(&ioa_cfg->reset_cmd->timer); 3601 ipr_reset_ioa_job(ioa_cfg->reset_cmd); 3602 } else { 3603 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED) 3604 ioa_cfg->ioa_unit_checked = 1; 3605 else 3606 dev_err(&ioa_cfg->pdev->dev, 3607 "Permanent IOA failure. 0x%08X\n", int_reg); 3608 3609 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 3610 ioa_cfg->sdt_state = GET_DUMP; 3611 3612 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 3613 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 3614 } 3615 3616 return rc; 3617} 3618 3619/** 3620 * ipr_isr - Interrupt service routine 3621 * @irq: irq number 3622 * @devp: pointer to ioa config struct 3623 * @regs: pt_regs struct 3624 * 3625 * Return value: 3626 * IRQ_NONE / IRQ_HANDLED 3627 **/ 3628static irqreturn_t ipr_isr(int irq, void *devp, struct pt_regs *regs) 3629{ 3630 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp; 3631 unsigned long lock_flags = 0; 3632 volatile u32 int_reg, int_mask_reg; 3633 u32 ioasc; 3634 u16 cmd_index; 3635 struct ipr_cmnd *ipr_cmd; 3636 irqreturn_t rc = IRQ_NONE; 3637 3638 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3639 3640 /* If interrupts are disabled, ignore the interrupt */ 3641 if (!ioa_cfg->allow_interrupts) { 3642 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3643 return IRQ_NONE; 3644 } 3645 3646 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 3647 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 3648 3649 /* If an interrupt on the adapter did not occur, ignore it */ 3650 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) { 3651 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3652 return IRQ_NONE; 3653 } 3654 3655 while (1) { 3656 ipr_cmd = NULL; 3657 3658 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) == 3659 ioa_cfg->toggle_bit) { 3660 3661 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) & 3662 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT; 3663 3664 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) { 3665 ioa_cfg->errors_logged++; 3666 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n"); 3667 3668 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 3669 ioa_cfg->sdt_state = GET_DUMP; 3670 3671 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 3672 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3673 return IRQ_HANDLED; 3674 } 3675 3676 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index]; 3677 3678 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 3679 3680 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc); 3681 3682 list_del(&ipr_cmd->queue); 3683 del_timer(&ipr_cmd->timer); 3684 ipr_cmd->done(ipr_cmd); 3685 3686 rc = IRQ_HANDLED; 3687 3688 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) { 3689 ioa_cfg->hrrq_curr++; 3690 } else { 3691 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; 3692 ioa_cfg->toggle_bit ^= 1u; 3693 } 3694 } 3695 3696 if (ipr_cmd != NULL) { 3697 /* Clear the PCI interrupt */ 3698 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg); 3699 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 3700 } else 3701 break; 3702 } 3703 3704 if (unlikely(rc == IRQ_NONE)) 3705 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg); 3706 3707 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3708 return rc; 3709} 3710 3711/** 3712 * ipr_build_ioadl - Build a scatter/gather list and map the buffer 3713 * @ioa_cfg: ioa config struct 3714 * @ipr_cmd: ipr command struct 3715 * 3716 * Return value: 3717 * 0 on success / -1 on failure 3718 **/ 3719static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg, 3720 struct ipr_cmnd *ipr_cmd) 3721{ 3722 int i; 3723 struct scatterlist *sglist; 3724 u32 length; 3725 u32 ioadl_flags = 0; 3726 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 3727 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 3728 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 3729 3730 length = scsi_cmd->request_bufflen; 3731 3732 if (length == 0) 3733 return 0; 3734 3735 if (scsi_cmd->use_sg) { 3736 ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev, 3737 scsi_cmd->request_buffer, 3738 scsi_cmd->use_sg, 3739 scsi_cmd->sc_data_direction); 3740 3741 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 3742 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 3743 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 3744 ioarcb->write_data_transfer_length = cpu_to_be32(length); 3745 ioarcb->write_ioadl_len = 3746 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 3747 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) { 3748 ioadl_flags = IPR_IOADL_FLAGS_READ; 3749 ioarcb->read_data_transfer_length = cpu_to_be32(length); 3750 ioarcb->read_ioadl_len = 3751 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 3752 } 3753 3754 sglist = scsi_cmd->request_buffer; 3755 3756 for (i = 0; i < ipr_cmd->dma_use_sg; i++) { 3757 ioadl[i].flags_and_data_len = 3758 cpu_to_be32(ioadl_flags | sg_dma_len(&sglist[i])); 3759 ioadl[i].address = 3760 cpu_to_be32(sg_dma_address(&sglist[i])); 3761 } 3762 3763 if (likely(ipr_cmd->dma_use_sg)) { 3764 ioadl[i-1].flags_and_data_len |= 3765 cpu_to_be32(IPR_IOADL_FLAGS_LAST); 3766 return 0; 3767 } else 3768 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n"); 3769 } else { 3770 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 3771 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 3772 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 3773 ioarcb->write_data_transfer_length = cpu_to_be32(length); 3774 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 3775 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) { 3776 ioadl_flags = IPR_IOADL_FLAGS_READ; 3777 ioarcb->read_data_transfer_length = cpu_to_be32(length); 3778 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 3779 } 3780 3781 ipr_cmd->dma_handle = pci_map_single(ioa_cfg->pdev, 3782 scsi_cmd->request_buffer, length, 3783 scsi_cmd->sc_data_direction); 3784 3785 if (likely(!pci_dma_mapping_error(ipr_cmd->dma_handle))) { 3786 ipr_cmd->dma_use_sg = 1; 3787 ioadl[0].flags_and_data_len = 3788 cpu_to_be32(ioadl_flags | length | IPR_IOADL_FLAGS_LAST); 3789 ioadl[0].address = cpu_to_be32(ipr_cmd->dma_handle); 3790 return 0; 3791 } else 3792 dev_err(&ioa_cfg->pdev->dev, "pci_map_single failed!\n"); 3793 } 3794 3795 return -1; 3796} 3797 3798/** 3799 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes 3800 * @scsi_cmd: scsi command struct 3801 * 3802 * Return value: 3803 * task attributes 3804 **/ 3805static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd) 3806{ 3807 u8 tag[2]; 3808 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK; 3809 3810 if (scsi_populate_tag_msg(scsi_cmd, tag)) { 3811 switch (tag[0]) { 3812 case MSG_SIMPLE_TAG: 3813 rc = IPR_FLAGS_LO_SIMPLE_TASK; 3814 break; 3815 case MSG_HEAD_TAG: 3816 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK; 3817 break; 3818 case MSG_ORDERED_TAG: 3819 rc = IPR_FLAGS_LO_ORDERED_TASK; 3820 break; 3821 }; 3822 } 3823 3824 return rc; 3825} 3826 3827/** 3828 * ipr_erp_done - Process completion of ERP for a device 3829 * @ipr_cmd: ipr command struct 3830 * 3831 * This function copies the sense buffer into the scsi_cmd 3832 * struct and pushes the scsi_done function. 3833 * 3834 * Return value: 3835 * nothing 3836 **/ 3837static void ipr_erp_done(struct ipr_cmnd *ipr_cmd) 3838{ 3839 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 3840 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 3841 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 3842 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 3843 3844 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 3845 scsi_cmd->result |= (DID_ERROR << 16); 3846 scmd_printk(KERN_ERR, scsi_cmd, 3847 "Request Sense failed with IOASC: 0x%08X\n", ioasc); 3848 } else { 3849 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer, 3850 SCSI_SENSE_BUFFERSIZE); 3851 } 3852 3853 if (res) { 3854 if (!ipr_is_naca_model(res)) 3855 res->needs_sync_complete = 1; 3856 res->in_erp = 0; 3857 } 3858 ipr_unmap_sglist(ioa_cfg, ipr_cmd); 3859 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 3860 scsi_cmd->scsi_done(scsi_cmd); 3861} 3862 3863/** 3864 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP 3865 * @ipr_cmd: ipr command struct 3866 * 3867 * Return value: 3868 * none 3869 **/ 3870static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd) 3871{ 3872 struct ipr_ioarcb *ioarcb; 3873 struct ipr_ioasa *ioasa; 3874 3875 ioarcb = &ipr_cmd->ioarcb; 3876 ioasa = &ipr_cmd->ioasa; 3877 3878 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); 3879 ioarcb->write_data_transfer_length = 0; 3880 ioarcb->read_data_transfer_length = 0; 3881 ioarcb->write_ioadl_len = 0; 3882 ioarcb->read_ioadl_len = 0; 3883 ioasa->ioasc = 0; 3884 ioasa->residual_data_len = 0; 3885} 3886 3887/** 3888 * ipr_erp_request_sense - Send request sense to a device 3889 * @ipr_cmd: ipr command struct 3890 * 3891 * This function sends a request sense to a device as a result 3892 * of a check condition. 3893 * 3894 * Return value: 3895 * nothing 3896 **/ 3897static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd) 3898{ 3899 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 3900 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 3901 3902 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 3903 ipr_erp_done(ipr_cmd); 3904 return; 3905 } 3906 3907 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 3908 3909 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB; 3910 cmd_pkt->cdb[0] = REQUEST_SENSE; 3911 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE; 3912 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE; 3913 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 3914 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ); 3915 3916 ipr_cmd->ioadl[0].flags_and_data_len = 3917 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE); 3918 ipr_cmd->ioadl[0].address = 3919 cpu_to_be32(ipr_cmd->sense_buffer_dma); 3920 3921 ipr_cmd->ioarcb.read_ioadl_len = 3922 cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 3923 ipr_cmd->ioarcb.read_data_transfer_length = 3924 cpu_to_be32(SCSI_SENSE_BUFFERSIZE); 3925 3926 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout, 3927 IPR_REQUEST_SENSE_TIMEOUT * 2); 3928} 3929 3930/** 3931 * ipr_erp_cancel_all - Send cancel all to a device 3932 * @ipr_cmd: ipr command struct 3933 * 3934 * This function sends a cancel all to a device to clear the 3935 * queue. If we are running TCQ on the device, QERR is set to 1, 3936 * which means all outstanding ops have been dropped on the floor. 3937 * Cancel all will return them to us. 3938 * 3939 * Return value: 3940 * nothing 3941 **/ 3942static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd) 3943{ 3944 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 3945 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 3946 struct ipr_cmd_pkt *cmd_pkt; 3947 3948 res->in_erp = 1; 3949 3950 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 3951 3952 if (!scsi_get_tag_type(scsi_cmd->device)) { 3953 ipr_erp_request_sense(ipr_cmd); 3954 return; 3955 } 3956 3957 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 3958 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 3959 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 3960 3961 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout, 3962 IPR_CANCEL_ALL_TIMEOUT); 3963} 3964 3965/** 3966 * ipr_dump_ioasa - Dump contents of IOASA 3967 * @ioa_cfg: ioa config struct 3968 * @ipr_cmd: ipr command struct 3969 * @res: resource entry struct 3970 * 3971 * This function is invoked by the interrupt handler when ops 3972 * fail. It will log the IOASA if appropriate. Only called 3973 * for GPDD ops. 3974 * 3975 * Return value: 3976 * none 3977 **/ 3978static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg, 3979 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res) 3980{ 3981 int i; 3982 u16 data_len; 3983 u32 ioasc; 3984 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 3985 __be32 *ioasa_data = (__be32 *)ioasa; 3986 int error_index; 3987 3988 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK; 3989 3990 if (0 == ioasc) 3991 return; 3992 3993 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL) 3994 return; 3995 3996 error_index = ipr_get_error(ioasc); 3997 3998 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) { 3999 /* Don't log an error if the IOA already logged one */ 4000 if (ioasa->ilid != 0) 4001 return; 4002 4003 if (ipr_error_table[error_index].log_ioasa == 0) 4004 return; 4005 } 4006 4007 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error); 4008 4009 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len)) 4010 data_len = sizeof(struct ipr_ioasa); 4011 else 4012 data_len = be16_to_cpu(ioasa->ret_stat_len); 4013 4014 ipr_err("IOASA Dump:\n"); 4015 4016 for (i = 0; i < data_len / 4; i += 4) { 4017 ipr_err("%08X: %08X %08X %08X %08X\n", i*4, 4018 be32_to_cpu(ioasa_data[i]), 4019 be32_to_cpu(ioasa_data[i+1]), 4020 be32_to_cpu(ioasa_data[i+2]), 4021 be32_to_cpu(ioasa_data[i+3])); 4022 } 4023} 4024 4025/** 4026 * ipr_gen_sense - Generate SCSI sense data from an IOASA 4027 * @ioasa: IOASA 4028 * @sense_buf: sense data buffer 4029 * 4030 * Return value: 4031 * none 4032 **/ 4033static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd) 4034{ 4035 u32 failing_lba; 4036 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer; 4037 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata; 4038 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 4039 u32 ioasc = be32_to_cpu(ioasa->ioasc); 4040 4041 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE); 4042 4043 if (ioasc >= IPR_FIRST_DRIVER_IOASC) 4044 return; 4045 4046 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION; 4047 4048 if (ipr_is_vset_device(res) && 4049 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC && 4050 ioasa->u.vset.failing_lba_hi != 0) { 4051 sense_buf[0] = 0x72; 4052 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc); 4053 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc); 4054 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc); 4055 4056 sense_buf[7] = 12; 4057 sense_buf[8] = 0; 4058 sense_buf[9] = 0x0A; 4059 sense_buf[10] = 0x80; 4060 4061 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi); 4062 4063 sense_buf[12] = (failing_lba & 0xff000000) >> 24; 4064 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16; 4065 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8; 4066 sense_buf[15] = failing_lba & 0x000000ff; 4067 4068 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 4069 4070 sense_buf[16] = (failing_lba & 0xff000000) >> 24; 4071 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16; 4072 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8; 4073 sense_buf[19] = failing_lba & 0x000000ff; 4074 } else { 4075 sense_buf[0] = 0x70; 4076 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc); 4077 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc); 4078 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc); 4079 4080 /* Illegal request */ 4081 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) && 4082 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) { 4083 sense_buf[7] = 10; /* additional length */ 4084 4085 /* IOARCB was in error */ 4086 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24) 4087 sense_buf[15] = 0xC0; 4088 else /* Parameter data was invalid */ 4089 sense_buf[15] = 0x80; 4090 4091 sense_buf[16] = 4092 ((IPR_FIELD_POINTER_MASK & 4093 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff; 4094 sense_buf[17] = 4095 (IPR_FIELD_POINTER_MASK & 4096 be32_to_cpu(ioasa->ioasc_specific)) & 0xff; 4097 } else { 4098 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) { 4099 if (ipr_is_vset_device(res)) 4100 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 4101 else 4102 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba); 4103 4104 sense_buf[0] |= 0x80; /* Or in the Valid bit */ 4105 sense_buf[3] = (failing_lba & 0xff000000) >> 24; 4106 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16; 4107 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8; 4108 sense_buf[6] = failing_lba & 0x000000ff; 4109 } 4110 4111 sense_buf[7] = 6; /* additional length */ 4112 } 4113 } 4114} 4115 4116/** 4117 * ipr_get_autosense - Copy autosense data to sense buffer 4118 * @ipr_cmd: ipr command struct 4119 * 4120 * This function copies the autosense buffer to the buffer 4121 * in the scsi_cmd, if there is autosense available. 4122 * 4123 * Return value: 4124 * 1 if autosense was available / 0 if not 4125 **/ 4126static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd) 4127{ 4128 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 4129 4130 if ((be32_to_cpu(ioasa->ioasc_specific) & IPR_AUTOSENSE_VALID) == 0) 4131 return 0; 4132 4133 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data, 4134 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len), 4135 SCSI_SENSE_BUFFERSIZE)); 4136 return 1; 4137} 4138 4139/** 4140 * ipr_erp_start - Process an error response for a SCSI op 4141 * @ioa_cfg: ioa config struct 4142 * @ipr_cmd: ipr command struct 4143 * 4144 * This function determines whether or not to initiate ERP 4145 * on the affected device. 4146 * 4147 * Return value: 4148 * nothing 4149 **/ 4150static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg, 4151 struct ipr_cmnd *ipr_cmd) 4152{ 4153 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 4154 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 4155 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4156 4157 if (!res) { 4158 ipr_scsi_eh_done(ipr_cmd); 4159 return; 4160 } 4161 4162 if (ipr_is_gscsi(res)) 4163 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res); 4164 else 4165 ipr_gen_sense(ipr_cmd); 4166 4167 switch (ioasc & IPR_IOASC_IOASC_MASK) { 4168 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST: 4169 if (ipr_is_naca_model(res)) 4170 scsi_cmd->result |= (DID_ABORT << 16); 4171 else 4172 scsi_cmd->result |= (DID_IMM_RETRY << 16); 4173 break; 4174 case IPR_IOASC_IR_RESOURCE_HANDLE: 4175 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA: 4176 scsi_cmd->result |= (DID_NO_CONNECT << 16); 4177 break; 4178 case IPR_IOASC_HW_SEL_TIMEOUT: 4179 scsi_cmd->result |= (DID_NO_CONNECT << 16); 4180 if (!ipr_is_naca_model(res)) 4181 res->needs_sync_complete = 1; 4182 break; 4183 case IPR_IOASC_SYNC_REQUIRED: 4184 if (!res->in_erp) 4185 res->needs_sync_complete = 1; 4186 scsi_cmd->result |= (DID_IMM_RETRY << 16); 4187 break; 4188 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */ 4189 case IPR_IOASA_IR_DUAL_IOA_DISABLED: 4190 scsi_cmd->result |= (DID_PASSTHROUGH << 16); 4191 break; 4192 case IPR_IOASC_BUS_WAS_RESET: 4193 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER: 4194 /* 4195 * Report the bus reset and ask for a retry. The device 4196 * will give CC/UA the next command. 4197 */ 4198 if (!res->resetting_device) 4199 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel); 4200 scsi_cmd->result |= (DID_ERROR << 16); 4201 if (!ipr_is_naca_model(res)) 4202 res->needs_sync_complete = 1; 4203 break; 4204 case IPR_IOASC_HW_DEV_BUS_STATUS: 4205 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc); 4206 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) { 4207 if (!ipr_get_autosense(ipr_cmd)) { 4208 if (!ipr_is_naca_model(res)) { 4209 ipr_erp_cancel_all(ipr_cmd); 4210 return; 4211 } 4212 } 4213 } 4214 if (!ipr_is_naca_model(res)) 4215 res->needs_sync_complete = 1; 4216 break; 4217 case IPR_IOASC_NR_INIT_CMD_REQUIRED: 4218 break; 4219 default: 4220 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR) 4221 scsi_cmd->result |= (DID_ERROR << 16); 4222 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res)) 4223 res->needs_sync_complete = 1; 4224 break; 4225 } 4226 4227 ipr_unmap_sglist(ioa_cfg, ipr_cmd); 4228 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4229 scsi_cmd->scsi_done(scsi_cmd); 4230} 4231 4232/** 4233 * ipr_scsi_done - mid-layer done function 4234 * @ipr_cmd: ipr command struct 4235 * 4236 * This function is invoked by the interrupt handler for 4237 * ops generated by the SCSI mid-layer 4238 * 4239 * Return value: 4240 * none 4241 **/ 4242static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd) 4243{ 4244 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4245 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 4246 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4247 4248 scsi_cmd->resid = be32_to_cpu(ipr_cmd->ioasa.residual_data_len); 4249 4250 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) { 4251 ipr_unmap_sglist(ioa_cfg, ipr_cmd); 4252 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4253 scsi_cmd->scsi_done(scsi_cmd); 4254 } else 4255 ipr_erp_start(ioa_cfg, ipr_cmd); 4256} 4257 4258/** 4259 * ipr_queuecommand - Queue a mid-layer request 4260 * @scsi_cmd: scsi command struct 4261 * @done: done function 4262 * 4263 * This function queues a request generated by the mid-layer. 4264 * 4265 * Return value: 4266 * 0 on success 4267 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy 4268 * SCSI_MLQUEUE_HOST_BUSY if host is busy 4269 **/ 4270static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd, 4271 void (*done) (struct scsi_cmnd *)) 4272{ 4273 struct ipr_ioa_cfg *ioa_cfg; 4274 struct ipr_resource_entry *res; 4275 struct ipr_ioarcb *ioarcb; 4276 struct ipr_cmnd *ipr_cmd; 4277 int rc = 0; 4278 4279 scsi_cmd->scsi_done = done; 4280 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; 4281 res = scsi_cmd->device->hostdata; 4282 scsi_cmd->result = (DID_OK << 16); 4283 4284 /* 4285 * We are currently blocking all devices due to a host reset 4286 * We have told the host to stop giving us new requests, but 4287 * ERP ops don't count. FIXME 4288 */ 4289 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead)) 4290 return SCSI_MLQUEUE_HOST_BUSY; 4291 4292 /* 4293 * FIXME - Create scsi_set_host_offline interface 4294 * and the ioa_is_dead check can be removed 4295 */ 4296 if (unlikely(ioa_cfg->ioa_is_dead || !res)) { 4297 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); 4298 scsi_cmd->result = (DID_NO_CONNECT << 16); 4299 scsi_cmd->scsi_done(scsi_cmd); 4300 return 0; 4301 } 4302 4303 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 4304 ioarcb = &ipr_cmd->ioarcb; 4305 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 4306 4307 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len); 4308 ipr_cmd->scsi_cmd = scsi_cmd; 4309 ioarcb->res_handle = res->cfgte.res_handle; 4310 ipr_cmd->done = ipr_scsi_done; 4311 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr)); 4312 4313 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) { 4314 if (scsi_cmd->underflow == 0) 4315 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 4316 4317 if (res->needs_sync_complete) { 4318 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE; 4319 res->needs_sync_complete = 0; 4320 } 4321 4322 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; 4323 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST; 4324 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR; 4325 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd); 4326 } 4327 4328 if (scsi_cmd->cmnd[0] >= 0xC0 && 4329 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) 4330 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 4331 4332 if (likely(rc == 0)) 4333 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd); 4334 4335 if (likely(rc == 0)) { 4336 mb(); 4337 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr), 4338 ioa_cfg->regs.ioarrin_reg); 4339 } else { 4340 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4341 return SCSI_MLQUEUE_HOST_BUSY; 4342 } 4343 4344 return 0; 4345} 4346 4347/** 4348 * ipr_info - Get information about the card/driver 4349 * @scsi_host: scsi host struct 4350 * 4351 * Return value: 4352 * pointer to buffer with description string 4353 **/ 4354static const char * ipr_ioa_info(struct Scsi_Host *host) 4355{ 4356 static char buffer[512]; 4357 struct ipr_ioa_cfg *ioa_cfg; 4358 unsigned long lock_flags = 0; 4359 4360 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata; 4361 4362 spin_lock_irqsave(host->host_lock, lock_flags); 4363 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type); 4364 spin_unlock_irqrestore(host->host_lock, lock_flags); 4365 4366 return buffer; 4367} 4368 4369static struct scsi_host_template driver_template = { 4370 .module = THIS_MODULE, 4371 .name = "IPR", 4372 .info = ipr_ioa_info, 4373 .queuecommand = ipr_queuecommand, 4374 .eh_abort_handler = ipr_eh_abort, 4375 .eh_device_reset_handler = ipr_eh_dev_reset, 4376 .eh_host_reset_handler = ipr_eh_host_reset, 4377 .slave_alloc = ipr_slave_alloc, 4378 .slave_configure = ipr_slave_configure, 4379 .slave_destroy = ipr_slave_destroy, 4380 .change_queue_depth = ipr_change_queue_depth, 4381 .change_queue_type = ipr_change_queue_type, 4382 .bios_param = ipr_biosparam, 4383 .can_queue = IPR_MAX_COMMANDS, 4384 .this_id = -1, 4385 .sg_tablesize = IPR_MAX_SGLIST, 4386 .max_sectors = IPR_IOA_MAX_SECTORS, 4387 .cmd_per_lun = IPR_MAX_CMD_PER_LUN, 4388 .use_clustering = ENABLE_CLUSTERING, 4389 .shost_attrs = ipr_ioa_attrs, 4390 .sdev_attrs = ipr_dev_attrs, 4391 .proc_name = IPR_NAME 4392}; 4393 4394#ifdef CONFIG_PPC_PSERIES 4395static const u16 ipr_blocked_processors[] = { 4396 PV_NORTHSTAR, 4397 PV_PULSAR, 4398 PV_POWER4, 4399 PV_ICESTAR, 4400 PV_SSTAR, 4401 PV_POWER4p, 4402 PV_630, 4403 PV_630p 4404}; 4405 4406/** 4407 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware 4408 * @ioa_cfg: ioa cfg struct 4409 * 4410 * Adapters that use Gemstone revision < 3.1 do not work reliably on 4411 * certain pSeries hardware. This function determines if the given 4412 * adapter is in one of these confgurations or not. 4413 * 4414 * Return value: 4415 * 1 if adapter is not supported / 0 if adapter is supported 4416 **/ 4417static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg) 4418{ 4419 u8 rev_id; 4420 int i; 4421 4422 if (ioa_cfg->type == 0x5702) { 4423 if (pci_read_config_byte(ioa_cfg->pdev, PCI_REVISION_ID, 4424 &rev_id) == PCIBIOS_SUCCESSFUL) { 4425 if (rev_id < 4) { 4426 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){ 4427 if (__is_processor(ipr_blocked_processors[i])) 4428 return 1; 4429 } 4430 } 4431 } 4432 } 4433 return 0; 4434} 4435#else 4436#define ipr_invalid_adapter(ioa_cfg) 0 4437#endif 4438 4439/** 4440 * ipr_ioa_bringdown_done - IOA bring down completion. 4441 * @ipr_cmd: ipr command struct 4442 * 4443 * This function processes the completion of an adapter bring down. 4444 * It wakes any reset sleepers. 4445 * 4446 * Return value: 4447 * IPR_RC_JOB_RETURN 4448 **/ 4449static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd) 4450{ 4451 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4452 4453 ENTER; 4454 ioa_cfg->in_reset_reload = 0; 4455 ioa_cfg->reset_retries = 0; 4456 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4457 wake_up_all(&ioa_cfg->reset_wait_q); 4458 4459 spin_unlock_irq(ioa_cfg->host->host_lock); 4460 scsi_unblock_requests(ioa_cfg->host); 4461 spin_lock_irq(ioa_cfg->host->host_lock); 4462 LEAVE; 4463 4464 return IPR_RC_JOB_RETURN; 4465} 4466 4467/** 4468 * ipr_ioa_reset_done - IOA reset completion. 4469 * @ipr_cmd: ipr command struct 4470 * 4471 * This function processes the completion of an adapter reset. 4472 * It schedules any necessary mid-layer add/removes and 4473 * wakes any reset sleepers. 4474 * 4475 * Return value: 4476 * IPR_RC_JOB_RETURN 4477 **/ 4478static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd) 4479{ 4480 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4481 struct ipr_resource_entry *res; 4482 struct ipr_hostrcb *hostrcb, *temp; 4483 int i = 0; 4484 4485 ENTER; 4486 ioa_cfg->in_reset_reload = 0; 4487 ioa_cfg->allow_cmds = 1; 4488 ioa_cfg->reset_cmd = NULL; 4489 ioa_cfg->doorbell |= IPR_RUNTIME_RESET; 4490 4491 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 4492 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) { 4493 ipr_trace; 4494 break; 4495 } 4496 } 4497 schedule_work(&ioa_cfg->work_q); 4498 4499 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) { 4500 list_del(&hostrcb->queue); 4501 if (i++ < IPR_NUM_LOG_HCAMS) 4502 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); 4503 else 4504 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 4505 } 4506 4507 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n"); 4508 4509 ioa_cfg->reset_retries = 0; 4510 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4511 wake_up_all(&ioa_cfg->reset_wait_q); 4512 4513 spin_unlock_irq(ioa_cfg->host->host_lock); 4514 scsi_unblock_requests(ioa_cfg->host); 4515 spin_lock_irq(ioa_cfg->host->host_lock); 4516 4517 if (!ioa_cfg->allow_cmds) 4518 scsi_block_requests(ioa_cfg->host); 4519 4520 LEAVE; 4521 return IPR_RC_JOB_RETURN; 4522} 4523 4524/** 4525 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer 4526 * @supported_dev: supported device struct 4527 * @vpids: vendor product id struct 4528 * 4529 * Return value: 4530 * none 4531 **/ 4532static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev, 4533 struct ipr_std_inq_vpids *vpids) 4534{ 4535 memset(supported_dev, 0, sizeof(struct ipr_supported_device)); 4536 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids)); 4537 supported_dev->num_records = 1; 4538 supported_dev->data_length = 4539 cpu_to_be16(sizeof(struct ipr_supported_device)); 4540 supported_dev->reserved = 0; 4541} 4542 4543/** 4544 * ipr_set_supported_devs - Send Set Supported Devices for a device 4545 * @ipr_cmd: ipr command struct 4546 * 4547 * This function send a Set Supported Devices to the adapter 4548 * 4549 * Return value: 4550 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 4551 **/ 4552static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd) 4553{ 4554 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4555 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev; 4556 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 4557 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 4558 struct ipr_resource_entry *res = ipr_cmd->u.res; 4559 4560 ipr_cmd->job_step = ipr_ioa_reset_done; 4561 4562 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) { 4563 if (!ipr_is_scsi_disk(res)) 4564 continue; 4565 4566 ipr_cmd->u.res = res; 4567 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids); 4568 4569 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 4570 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 4571 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 4572 4573 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES; 4574 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff; 4575 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff; 4576 4577 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | 4578 sizeof(struct ipr_supported_device)); 4579 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma + 4580 offsetof(struct ipr_misc_cbs, supp_dev)); 4581 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 4582 ioarcb->write_data_transfer_length = 4583 cpu_to_be32(sizeof(struct ipr_supported_device)); 4584 4585 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 4586 IPR_SET_SUP_DEVICE_TIMEOUT); 4587 4588 ipr_cmd->job_step = ipr_set_supported_devs; 4589 return IPR_RC_JOB_RETURN; 4590 } 4591 4592 return IPR_RC_JOB_CONTINUE; 4593} 4594 4595/** 4596 * ipr_setup_write_cache - Disable write cache if needed 4597 * @ipr_cmd: ipr command struct 4598 * 4599 * This function sets up adapters write cache to desired setting 4600 * 4601 * Return value: 4602 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 4603 **/ 4604static int ipr_setup_write_cache(struct ipr_cmnd *ipr_cmd) 4605{ 4606 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4607 4608 ipr_cmd->job_step = ipr_set_supported_devs; 4609 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next, 4610 struct ipr_resource_entry, queue); 4611 4612 if (ioa_cfg->cache_state != CACHE_DISABLED) 4613 return IPR_RC_JOB_CONTINUE; 4614 4615 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 4616 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 4617 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 4618 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL; 4619 4620 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 4621 4622 return IPR_RC_JOB_RETURN; 4623} 4624 4625/** 4626 * ipr_get_mode_page - Locate specified mode page 4627 * @mode_pages: mode page buffer 4628 * @page_code: page code to find 4629 * @len: minimum required length for mode page 4630 * 4631 * Return value: 4632 * pointer to mode page / NULL on failure 4633 **/ 4634static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages, 4635 u32 page_code, u32 len) 4636{ 4637 struct ipr_mode_page_hdr *mode_hdr; 4638 u32 page_length; 4639 u32 length; 4640 4641 if (!mode_pages || (mode_pages->hdr.length == 0)) 4642 return NULL; 4643 4644 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len; 4645 mode_hdr = (struct ipr_mode_page_hdr *) 4646 (mode_pages->data + mode_pages->hdr.block_desc_len); 4647 4648 while (length) { 4649 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) { 4650 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr))) 4651 return mode_hdr; 4652 break; 4653 } else { 4654 page_length = (sizeof(struct ipr_mode_page_hdr) + 4655 mode_hdr->page_length); 4656 length -= page_length; 4657 mode_hdr = (struct ipr_mode_page_hdr *) 4658 ((unsigned long)mode_hdr + page_length); 4659 } 4660 } 4661 return NULL; 4662} 4663 4664/** 4665 * ipr_check_term_power - Check for term power errors 4666 * @ioa_cfg: ioa config struct 4667 * @mode_pages: IOAFP mode pages buffer 4668 * 4669 * Check the IOAFP's mode page 28 for term power errors 4670 * 4671 * Return value: 4672 * nothing 4673 **/ 4674static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg, 4675 struct ipr_mode_pages *mode_pages) 4676{ 4677 int i; 4678 int entry_length; 4679 struct ipr_dev_bus_entry *bus; 4680 struct ipr_mode_page28 *mode_page; 4681 4682 mode_page = ipr_get_mode_page(mode_pages, 0x28, 4683 sizeof(struct ipr_mode_page28)); 4684 4685 entry_length = mode_page->entry_length; 4686 4687 bus = mode_page->bus; 4688 4689 for (i = 0; i < mode_page->num_entries; i++) { 4690 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) { 4691 dev_err(&ioa_cfg->pdev->dev, 4692 "Term power is absent on scsi bus %d\n", 4693 bus->res_addr.bus); 4694 } 4695 4696 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length); 4697 } 4698} 4699 4700/** 4701 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table 4702 * @ioa_cfg: ioa config struct 4703 * 4704 * Looks through the config table checking for SES devices. If 4705 * the SES device is in the SES table indicating a maximum SCSI 4706 * bus speed, the speed is limited for the bus. 4707 * 4708 * Return value: 4709 * none 4710 **/ 4711static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg) 4712{ 4713 u32 max_xfer_rate; 4714 int i; 4715 4716 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 4717 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i, 4718 ioa_cfg->bus_attr[i].bus_width); 4719 4720 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate) 4721 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate; 4722 } 4723} 4724 4725/** 4726 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28 4727 * @ioa_cfg: ioa config struct 4728 * @mode_pages: mode page 28 buffer 4729 * 4730 * Updates mode page 28 based on driver configuration 4731 * 4732 * Return value: 4733 * none 4734 **/ 4735static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg, 4736 struct ipr_mode_pages *mode_pages) 4737{ 4738 int i, entry_length; 4739 struct ipr_dev_bus_entry *bus; 4740 struct ipr_bus_attributes *bus_attr; 4741 struct ipr_mode_page28 *mode_page; 4742 4743 mode_page = ipr_get_mode_page(mode_pages, 0x28, 4744 sizeof(struct ipr_mode_page28)); 4745 4746 entry_length = mode_page->entry_length; 4747 4748 /* Loop for each device bus entry */ 4749 for (i = 0, bus = mode_page->bus; 4750 i < mode_page->num_entries; 4751 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) { 4752 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) { 4753 dev_err(&ioa_cfg->pdev->dev, 4754 "Invalid resource address reported: 0x%08X\n", 4755 IPR_GET_PHYS_LOC(bus->res_addr)); 4756 continue; 4757 } 4758 4759 bus_attr = &ioa_cfg->bus_attr[i]; 4760 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY; 4761 bus->bus_width = bus_attr->bus_width; 4762 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate); 4763 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK; 4764 if (bus_attr->qas_enabled) 4765 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS; 4766 else 4767 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS; 4768 } 4769} 4770 4771/** 4772 * ipr_build_mode_select - Build a mode select command 4773 * @ipr_cmd: ipr command struct 4774 * @res_handle: resource handle to send command to 4775 * @parm: Byte 2 of Mode Sense command 4776 * @dma_addr: DMA buffer address 4777 * @xfer_len: data transfer length 4778 * 4779 * Return value: 4780 * none 4781 **/ 4782static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd, 4783 __be32 res_handle, u8 parm, u32 dma_addr, 4784 u8 xfer_len) 4785{ 4786 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 4787 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 4788 4789 ioarcb->res_handle = res_handle; 4790 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 4791 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 4792 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT; 4793 ioarcb->cmd_pkt.cdb[1] = parm; 4794 ioarcb->cmd_pkt.cdb[4] = xfer_len; 4795 4796 ioadl->flags_and_data_len = 4797 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len); 4798 ioadl->address = cpu_to_be32(dma_addr); 4799 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 4800 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len); 4801} 4802 4803/** 4804 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA 4805 * @ipr_cmd: ipr command struct 4806 * 4807 * This function sets up the SCSI bus attributes and sends 4808 * a Mode Select for Page 28 to activate them. 4809 * 4810 * Return value: 4811 * IPR_RC_JOB_RETURN 4812 **/ 4813static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd) 4814{ 4815 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4816 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages; 4817 int length; 4818 4819 ENTER; 4820 ipr_scsi_bus_speed_limit(ioa_cfg); 4821 ipr_check_term_power(ioa_cfg, mode_pages); 4822 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages); 4823 length = mode_pages->hdr.length + 1; 4824 mode_pages->hdr.length = 0; 4825 4826 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11, 4827 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages), 4828 length); 4829 4830 ipr_cmd->job_step = ipr_setup_write_cache; 4831 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 4832 4833 LEAVE; 4834 return IPR_RC_JOB_RETURN; 4835} 4836 4837/** 4838 * ipr_build_mode_sense - Builds a mode sense command 4839 * @ipr_cmd: ipr command struct 4840 * @res: resource entry struct 4841 * @parm: Byte 2 of mode sense command 4842 * @dma_addr: DMA address of mode sense buffer 4843 * @xfer_len: Size of DMA buffer 4844 * 4845 * Return value: 4846 * none 4847 **/ 4848static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd, 4849 __be32 res_handle, 4850 u8 parm, u32 dma_addr, u8 xfer_len) 4851{ 4852 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 4853 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 4854 4855 ioarcb->res_handle = res_handle; 4856 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE; 4857 ioarcb->cmd_pkt.cdb[2] = parm; 4858 ioarcb->cmd_pkt.cdb[4] = xfer_len; 4859 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 4860 4861 ioadl->flags_and_data_len = 4862 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len); 4863 ioadl->address = cpu_to_be32(dma_addr); 4864 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 4865 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len); 4866} 4867 4868/** 4869 * ipr_reset_cmd_failed - Handle failure of IOA reset command 4870 * @ipr_cmd: ipr command struct 4871 * 4872 * This function handles the failure of an IOA bringup command. 4873 * 4874 * Return value: 4875 * IPR_RC_JOB_RETURN 4876 **/ 4877static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd) 4878{ 4879 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4880 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4881 4882 dev_err(&ioa_cfg->pdev->dev, 4883 "0x%02X failed with IOASC: 0x%08X\n", 4884 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc); 4885 4886 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 4887 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4888 return IPR_RC_JOB_RETURN; 4889} 4890 4891/** 4892 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense 4893 * @ipr_cmd: ipr command struct 4894 * 4895 * This function handles the failure of a Mode Sense to the IOAFP. 4896 * Some adapters do not handle all mode pages. 4897 * 4898 * Return value: 4899 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 4900 **/ 4901static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd) 4902{ 4903 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4904 4905 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) { 4906 ipr_cmd->job_step = ipr_setup_write_cache; 4907 return IPR_RC_JOB_CONTINUE; 4908 } 4909 4910 return ipr_reset_cmd_failed(ipr_cmd); 4911} 4912 4913/** 4914 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA 4915 * @ipr_cmd: ipr command struct 4916 * 4917 * This function send a Page 28 mode sense to the IOA to 4918 * retrieve SCSI bus attributes. 4919 * 4920 * Return value: 4921 * IPR_RC_JOB_RETURN 4922 **/ 4923static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd) 4924{ 4925 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4926 4927 ENTER; 4928 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 4929 0x28, ioa_cfg->vpd_cbs_dma + 4930 offsetof(struct ipr_misc_cbs, mode_pages), 4931 sizeof(struct ipr_mode_pages)); 4932 4933 ipr_cmd->job_step = ipr_ioafp_mode_select_page28; 4934 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed; 4935 4936 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 4937 4938 LEAVE; 4939 return IPR_RC_JOB_RETURN; 4940} 4941 4942/** 4943 * ipr_init_res_table - Initialize the resource table 4944 * @ipr_cmd: ipr command struct 4945 * 4946 * This function looks through the existing resource table, comparing 4947 * it with the config table. This function will take care of old/new 4948 * devices and schedule adding/removing them from the mid-layer 4949 * as appropriate. 4950 * 4951 * Return value: 4952 * IPR_RC_JOB_CONTINUE 4953 **/ 4954static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd) 4955{ 4956 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4957 struct ipr_resource_entry *res, *temp; 4958 struct ipr_config_table_entry *cfgte; 4959 int found, i; 4960 LIST_HEAD(old_res); 4961 4962 ENTER; 4963 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ) 4964 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n"); 4965 4966 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue) 4967 list_move_tail(&res->queue, &old_res); 4968 4969 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) { 4970 cfgte = &ioa_cfg->cfg_table->dev[i]; 4971 found = 0; 4972 4973 list_for_each_entry_safe(res, temp, &old_res, queue) { 4974 if (!memcmp(&res->cfgte.res_addr, 4975 &cfgte->res_addr, sizeof(cfgte->res_addr))) { 4976 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 4977 found = 1; 4978 break; 4979 } 4980 } 4981 4982 if (!found) { 4983 if (list_empty(&ioa_cfg->free_res_q)) { 4984 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n"); 4985 break; 4986 } 4987 4988 found = 1; 4989 res = list_entry(ioa_cfg->free_res_q.next, 4990 struct ipr_resource_entry, queue); 4991 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 4992 ipr_init_res_entry(res); 4993 res->add_to_ml = 1; 4994 } 4995 4996 if (found) 4997 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry)); 4998 } 4999 5000 list_for_each_entry_safe(res, temp, &old_res, queue) { 5001 if (res->sdev) { 5002 res->del_from_ml = 1; 5003 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE; 5004 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 5005 } else { 5006 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 5007 } 5008 } 5009 5010 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 5011 5012 LEAVE; 5013 return IPR_RC_JOB_CONTINUE; 5014} 5015 5016/** 5017 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter. 5018 * @ipr_cmd: ipr command struct 5019 * 5020 * This function sends a Query IOA Configuration command 5021 * to the adapter to retrieve the IOA configuration table. 5022 * 5023 * Return value: 5024 * IPR_RC_JOB_RETURN 5025 **/ 5026static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd) 5027{ 5028 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5029 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5030 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5031 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 5032 5033 ENTER; 5034 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n", 5035 ucode_vpd->major_release, ucode_vpd->card_type, 5036 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]); 5037 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 5038 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 5039 5040 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG; 5041 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff; 5042 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff; 5043 5044 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 5045 ioarcb->read_data_transfer_length = 5046 cpu_to_be32(sizeof(struct ipr_config_table)); 5047 5048 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma); 5049 ioadl->flags_and_data_len = 5050 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table)); 5051 5052 ipr_cmd->job_step = ipr_init_res_table; 5053 5054 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5055 5056 LEAVE; 5057 return IPR_RC_JOB_RETURN; 5058} 5059 5060/** 5061 * ipr_ioafp_inquiry - Send an Inquiry to the adapter. 5062 * @ipr_cmd: ipr command struct 5063 * 5064 * This utility function sends an inquiry to the adapter. 5065 * 5066 * Return value: 5067 * none 5068 **/ 5069static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page, 5070 u32 dma_addr, u8 xfer_len) 5071{ 5072 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5073 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5074 5075 ENTER; 5076 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 5077 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 5078 5079 ioarcb->cmd_pkt.cdb[0] = INQUIRY; 5080 ioarcb->cmd_pkt.cdb[1] = flags; 5081 ioarcb->cmd_pkt.cdb[2] = page; 5082 ioarcb->cmd_pkt.cdb[4] = xfer_len; 5083 5084 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 5085 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len); 5086 5087 ioadl->address = cpu_to_be32(dma_addr); 5088 ioadl->flags_and_data_len = 5089 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len); 5090 5091 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5092 LEAVE; 5093} 5094 5095/** 5096 * ipr_inquiry_page_supported - Is the given inquiry page supported 5097 * @page0: inquiry page 0 buffer 5098 * @page: page code. 5099 * 5100 * This function determines if the specified inquiry page is supported. 5101 * 5102 * Return value: 5103 * 1 if page is supported / 0 if not 5104 **/ 5105static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page) 5106{ 5107 int i; 5108 5109 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++) 5110 if (page0->page[i] == page) 5111 return 1; 5112 5113 return 0; 5114} 5115 5116/** 5117 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter. 5118 * @ipr_cmd: ipr command struct 5119 * 5120 * This function sends a Page 3 inquiry to the adapter 5121 * to retrieve software VPD information. 5122 * 5123 * Return value: 5124 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5125 **/ 5126static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd) 5127{ 5128 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5129 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data; 5130 5131 ENTER; 5132 5133 if (!ipr_inquiry_page_supported(page0, 1)) 5134 ioa_cfg->cache_state = CACHE_NONE; 5135 5136 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg; 5137 5138 ipr_ioafp_inquiry(ipr_cmd, 1, 3, 5139 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data), 5140 sizeof(struct ipr_inquiry_page3)); 5141 5142 LEAVE; 5143 return IPR_RC_JOB_RETURN; 5144} 5145 5146/** 5147 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter. 5148 * @ipr_cmd: ipr command struct 5149 * 5150 * This function sends a Page 0 inquiry to the adapter 5151 * to retrieve supported inquiry pages. 5152 * 5153 * Return value: 5154 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5155 **/ 5156static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd) 5157{ 5158 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5159 char type[5]; 5160 5161 ENTER; 5162 5163 /* Grab the type out of the VPD and store it away */ 5164 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4); 5165 type[4] = '\0'; 5166 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16); 5167 5168 ipr_cmd->job_step = ipr_ioafp_page3_inquiry; 5169 5170 ipr_ioafp_inquiry(ipr_cmd, 1, 0, 5171 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data), 5172 sizeof(struct ipr_inquiry_page0)); 5173 5174 LEAVE; 5175 return IPR_RC_JOB_RETURN; 5176} 5177 5178/** 5179 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter. 5180 * @ipr_cmd: ipr command struct 5181 * 5182 * This function sends a standard inquiry to the adapter. 5183 * 5184 * Return value: 5185 * IPR_RC_JOB_RETURN 5186 **/ 5187static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd) 5188{ 5189 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5190 5191 ENTER; 5192 ipr_cmd->job_step = ipr_ioafp_page0_inquiry; 5193 5194 ipr_ioafp_inquiry(ipr_cmd, 0, 0, 5195 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd), 5196 sizeof(struct ipr_ioa_vpd)); 5197 5198 LEAVE; 5199 return IPR_RC_JOB_RETURN; 5200} 5201 5202/** 5203 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ. 5204 * @ipr_cmd: ipr command struct 5205 * 5206 * This function send an Identify Host Request Response Queue 5207 * command to establish the HRRQ with the adapter. 5208 * 5209 * Return value: 5210 * IPR_RC_JOB_RETURN 5211 **/ 5212static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd) 5213{ 5214 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5215 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5216 5217 ENTER; 5218 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n"); 5219 5220 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q; 5221 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 5222 5223 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 5224 ioarcb->cmd_pkt.cdb[2] = 5225 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff; 5226 ioarcb->cmd_pkt.cdb[3] = 5227 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff; 5228 ioarcb->cmd_pkt.cdb[4] = 5229 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff; 5230 ioarcb->cmd_pkt.cdb[5] = 5231 ((u32) ioa_cfg->host_rrq_dma) & 0xff; 5232 ioarcb->cmd_pkt.cdb[7] = 5233 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff; 5234 ioarcb->cmd_pkt.cdb[8] = 5235 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff; 5236 5237 ipr_cmd->job_step = ipr_ioafp_std_inquiry; 5238 5239 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5240 5241 LEAVE; 5242 return IPR_RC_JOB_RETURN; 5243} 5244 5245/** 5246 * ipr_reset_timer_done - Adapter reset timer function 5247 * @ipr_cmd: ipr command struct 5248 * 5249 * Description: This function is used in adapter reset processing 5250 * for timing events. If the reset_cmd pointer in the IOA 5251 * config struct is not this adapter's we are doing nested 5252 * resets and fail_all_ops will take care of freeing the 5253 * command block. 5254 * 5255 * Return value: 5256 * none 5257 **/ 5258static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd) 5259{ 5260 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5261 unsigned long lock_flags = 0; 5262 5263 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 5264 5265 if (ioa_cfg->reset_cmd == ipr_cmd) { 5266 list_del(&ipr_cmd->queue); 5267 ipr_cmd->done(ipr_cmd); 5268 } 5269 5270 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5271} 5272 5273/** 5274 * ipr_reset_start_timer - Start a timer for adapter reset job 5275 * @ipr_cmd: ipr command struct 5276 * @timeout: timeout value 5277 * 5278 * Description: This function is used in adapter reset processing 5279 * for timing events. If the reset_cmd pointer in the IOA 5280 * config struct is not this adapter's we are doing nested 5281 * resets and fail_all_ops will take care of freeing the 5282 * command block. 5283 * 5284 * Return value: 5285 * none 5286 **/ 5287static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd, 5288 unsigned long timeout) 5289{ 5290 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q); 5291 ipr_cmd->done = ipr_reset_ioa_job; 5292 5293 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 5294 ipr_cmd->timer.expires = jiffies + timeout; 5295 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done; 5296 add_timer(&ipr_cmd->timer); 5297} 5298 5299/** 5300 * ipr_init_ioa_mem - Initialize ioa_cfg control block 5301 * @ioa_cfg: ioa cfg struct 5302 * 5303 * Return value: 5304 * nothing 5305 **/ 5306static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg) 5307{ 5308 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS); 5309 5310 /* Initialize Host RRQ pointers */ 5311 ioa_cfg->hrrq_start = ioa_cfg->host_rrq; 5312 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1]; 5313 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; 5314 ioa_cfg->toggle_bit = 1; 5315 5316 /* Zero out config table */ 5317 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table)); 5318} 5319 5320/** 5321 * ipr_reset_enable_ioa - Enable the IOA following a reset. 5322 * @ipr_cmd: ipr command struct 5323 * 5324 * This function reinitializes some control blocks and 5325 * enables destructive diagnostics on the adapter. 5326 * 5327 * Return value: 5328 * IPR_RC_JOB_RETURN 5329 **/ 5330static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd) 5331{ 5332 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5333 volatile u32 int_reg; 5334 5335 ENTER; 5336 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq; 5337 ipr_init_ioa_mem(ioa_cfg); 5338 5339 ioa_cfg->allow_interrupts = 1; 5340 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 5341 5342 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 5343 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED), 5344 ioa_cfg->regs.clr_interrupt_mask_reg); 5345 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 5346 return IPR_RC_JOB_CONTINUE; 5347 } 5348 5349 /* Enable destructive diagnostics on IOA */ 5350 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg); 5351 5352 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg); 5353 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 5354 5355 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n"); 5356 5357 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 5358 ipr_cmd->timer.expires = jiffies + (ipr_transop_timeout * HZ); 5359 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout; 5360 ipr_cmd->done = ipr_reset_ioa_job; 5361 add_timer(&ipr_cmd->timer); 5362 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 5363 5364 LEAVE; 5365 return IPR_RC_JOB_RETURN; 5366} 5367 5368/** 5369 * ipr_reset_wait_for_dump - Wait for a dump to timeout. 5370 * @ipr_cmd: ipr command struct 5371 * 5372 * This function is invoked when an adapter dump has run out 5373 * of processing time. 5374 * 5375 * Return value: 5376 * IPR_RC_JOB_CONTINUE 5377 **/ 5378static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd) 5379{ 5380 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5381 5382 if (ioa_cfg->sdt_state == GET_DUMP) 5383 ioa_cfg->sdt_state = ABORT_DUMP; 5384 5385 ipr_cmd->job_step = ipr_reset_alert; 5386 5387 return IPR_RC_JOB_CONTINUE; 5388} 5389 5390/** 5391 * ipr_unit_check_no_data - Log a unit check/no data error log 5392 * @ioa_cfg: ioa config struct 5393 * 5394 * Logs an error indicating the adapter unit checked, but for some 5395 * reason, we were unable to fetch the unit check buffer. 5396 * 5397 * Return value: 5398 * nothing 5399 **/ 5400static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg) 5401{ 5402 ioa_cfg->errors_logged++; 5403 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n"); 5404} 5405 5406/** 5407 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA 5408 * @ioa_cfg: ioa config struct 5409 * 5410 * Fetches the unit check buffer from the adapter by clocking the data 5411 * through the mailbox register. 5412 * 5413 * Return value: 5414 * nothing 5415 **/ 5416static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg) 5417{ 5418 unsigned long mailbox; 5419 struct ipr_hostrcb *hostrcb; 5420 struct ipr_uc_sdt sdt; 5421 int rc, length; 5422 5423 mailbox = readl(ioa_cfg->ioa_mailbox); 5424 5425 if (!ipr_sdt_is_fmt2(mailbox)) { 5426 ipr_unit_check_no_data(ioa_cfg); 5427 return; 5428 } 5429 5430 memset(&sdt, 0, sizeof(struct ipr_uc_sdt)); 5431 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt, 5432 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32)); 5433 5434 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) || 5435 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) { 5436 ipr_unit_check_no_data(ioa_cfg); 5437 return; 5438 } 5439 5440 /* Find length of the first sdt entry (UC buffer) */ 5441 length = (be32_to_cpu(sdt.entry[0].end_offset) - 5442 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK; 5443 5444 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next, 5445 struct ipr_hostrcb, queue); 5446 list_del(&hostrcb->queue); 5447 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam)); 5448 5449 rc = ipr_get_ldump_data_section(ioa_cfg, 5450 be32_to_cpu(sdt.entry[0].bar_str_offset), 5451 (__be32 *)&hostrcb->hcam, 5452 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32)); 5453 5454 if (!rc) 5455 ipr_handle_log_data(ioa_cfg, hostrcb); 5456 else 5457 ipr_unit_check_no_data(ioa_cfg); 5458 5459 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 5460} 5461 5462/** 5463 * ipr_reset_restore_cfg_space - Restore PCI config space. 5464 * @ipr_cmd: ipr command struct 5465 * 5466 * Description: This function restores the saved PCI config space of 5467 * the adapter, fails all outstanding ops back to the callers, and 5468 * fetches the dump/unit check if applicable to this reset. 5469 * 5470 * Return value: 5471 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5472 **/ 5473static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd) 5474{ 5475 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5476 int rc; 5477 5478 ENTER; 5479 pci_unblock_user_cfg_access(ioa_cfg->pdev); 5480 rc = pci_restore_state(ioa_cfg->pdev); 5481 5482 if (rc != PCIBIOS_SUCCESSFUL) { 5483 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 5484 return IPR_RC_JOB_CONTINUE; 5485 } 5486 5487 if (ipr_set_pcix_cmd_reg(ioa_cfg)) { 5488 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 5489 return IPR_RC_JOB_CONTINUE; 5490 } 5491 5492 ipr_fail_all_ops(ioa_cfg); 5493 5494 if (ioa_cfg->ioa_unit_checked) { 5495 ioa_cfg->ioa_unit_checked = 0; 5496 ipr_get_unit_check_buffer(ioa_cfg); 5497 ipr_cmd->job_step = ipr_reset_alert; 5498 ipr_reset_start_timer(ipr_cmd, 0); 5499 return IPR_RC_JOB_RETURN; 5500 } 5501 5502 if (ioa_cfg->in_ioa_bringdown) { 5503 ipr_cmd->job_step = ipr_ioa_bringdown_done; 5504 } else { 5505 ipr_cmd->job_step = ipr_reset_enable_ioa; 5506 5507 if (GET_DUMP == ioa_cfg->sdt_state) { 5508 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT); 5509 ipr_cmd->job_step = ipr_reset_wait_for_dump; 5510 schedule_work(&ioa_cfg->work_q); 5511 return IPR_RC_JOB_RETURN; 5512 } 5513 } 5514 5515 ENTER; 5516 return IPR_RC_JOB_CONTINUE; 5517} 5518 5519/** 5520 * ipr_reset_start_bist - Run BIST on the adapter. 5521 * @ipr_cmd: ipr command struct 5522 * 5523 * Description: This function runs BIST on the adapter, then delays 2 seconds. 5524 * 5525 * Return value: 5526 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5527 **/ 5528static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd) 5529{ 5530 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5531 int rc; 5532 5533 ENTER; 5534 pci_block_user_cfg_access(ioa_cfg->pdev); 5535 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START); 5536 5537 if (rc != PCIBIOS_SUCCESSFUL) { 5538 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 5539 rc = IPR_RC_JOB_CONTINUE; 5540 } else { 5541 ipr_cmd->job_step = ipr_reset_restore_cfg_space; 5542 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT); 5543 rc = IPR_RC_JOB_RETURN; 5544 } 5545 5546 LEAVE; 5547 return rc; 5548} 5549 5550/** 5551 * ipr_reset_allowed - Query whether or not IOA can be reset 5552 * @ioa_cfg: ioa config struct 5553 * 5554 * Return value: 5555 * 0 if reset not allowed / non-zero if reset is allowed 5556 **/ 5557static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg) 5558{ 5559 volatile u32 temp_reg; 5560 5561 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 5562 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0); 5563} 5564 5565/** 5566 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA. 5567 * @ipr_cmd: ipr command struct 5568 * 5569 * Description: This function waits for adapter permission to run BIST, 5570 * then runs BIST. If the adapter does not give permission after a 5571 * reasonable time, we will reset the adapter anyway. The impact of 5572 * resetting the adapter without warning the adapter is the risk of 5573 * losing the persistent error log on the adapter. If the adapter is 5574 * reset while it is writing to the flash on the adapter, the flash 5575 * segment will have bad ECC and be zeroed. 5576 * 5577 * Return value: 5578 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5579 **/ 5580static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd) 5581{ 5582 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5583 int rc = IPR_RC_JOB_RETURN; 5584 5585 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) { 5586 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT; 5587 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 5588 } else { 5589 ipr_cmd->job_step = ipr_reset_start_bist; 5590 rc = IPR_RC_JOB_CONTINUE; 5591 } 5592 5593 return rc; 5594} 5595 5596/** 5597 * ipr_reset_alert_part2 - Alert the adapter of a pending reset 5598 * @ipr_cmd: ipr command struct 5599 * 5600 * Description: This function alerts the adapter that it will be reset. 5601 * If memory space is not currently enabled, proceed directly 5602 * to running BIST on the adapter. The timer must always be started 5603 * so we guarantee we do not run BIST from ipr_isr. 5604 * 5605 * Return value: 5606 * IPR_RC_JOB_RETURN 5607 **/ 5608static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd) 5609{ 5610 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5611 u16 cmd_reg; 5612 int rc; 5613 5614 ENTER; 5615 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg); 5616 5617 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) { 5618 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 5619 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg); 5620 ipr_cmd->job_step = ipr_reset_wait_to_start_bist; 5621 } else { 5622 ipr_cmd->job_step = ipr_reset_start_bist; 5623 } 5624 5625 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT; 5626 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 5627 5628 LEAVE; 5629 return IPR_RC_JOB_RETURN; 5630} 5631 5632/** 5633 * ipr_reset_ucode_download_done - Microcode download completion 5634 * @ipr_cmd: ipr command struct 5635 * 5636 * Description: This function unmaps the microcode download buffer. 5637 * 5638 * Return value: 5639 * IPR_RC_JOB_CONTINUE 5640 **/ 5641static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd) 5642{ 5643 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5644 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 5645 5646 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist, 5647 sglist->num_sg, DMA_TO_DEVICE); 5648 5649 ipr_cmd->job_step = ipr_reset_alert; 5650 return IPR_RC_JOB_CONTINUE; 5651} 5652 5653/** 5654 * ipr_reset_ucode_download - Download microcode to the adapter 5655 * @ipr_cmd: ipr command struct 5656 * 5657 * Description: This function checks to see if it there is microcode 5658 * to download to the adapter. If there is, a download is performed. 5659 * 5660 * Return value: 5661 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5662 **/ 5663static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd) 5664{ 5665 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5666 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 5667 5668 ENTER; 5669 ipr_cmd->job_step = ipr_reset_alert; 5670 5671 if (!sglist) 5672 return IPR_RC_JOB_CONTINUE; 5673 5674 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 5675 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 5676 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER; 5677 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE; 5678 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16; 5679 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8; 5680 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff; 5681 5682 ipr_build_ucode_ioadl(ipr_cmd, sglist); 5683 ipr_cmd->job_step = ipr_reset_ucode_download_done; 5684 5685 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 5686 IPR_WRITE_BUFFER_TIMEOUT); 5687 5688 LEAVE; 5689 return IPR_RC_JOB_RETURN; 5690} 5691 5692/** 5693 * ipr_reset_shutdown_ioa - Shutdown the adapter 5694 * @ipr_cmd: ipr command struct 5695 * 5696 * Description: This function issues an adapter shutdown of the 5697 * specified type to the specified adapter as part of the 5698 * adapter reset job. 5699 * 5700 * Return value: 5701 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5702 **/ 5703static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd) 5704{ 5705 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5706 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type; 5707 unsigned long timeout; 5708 int rc = IPR_RC_JOB_CONTINUE; 5709 5710 ENTER; 5711 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) { 5712 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 5713 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 5714 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 5715 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type; 5716 5717 if (shutdown_type == IPR_SHUTDOWN_ABBREV) 5718 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT; 5719 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL) 5720 timeout = IPR_INTERNAL_TIMEOUT; 5721 else 5722 timeout = IPR_SHUTDOWN_TIMEOUT; 5723 5724 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout); 5725 5726 rc = IPR_RC_JOB_RETURN; 5727 ipr_cmd->job_step = ipr_reset_ucode_download; 5728 } else 5729 ipr_cmd->job_step = ipr_reset_alert; 5730 5731 LEAVE; 5732 return rc; 5733} 5734 5735/** 5736 * ipr_reset_ioa_job - Adapter reset job 5737 * @ipr_cmd: ipr command struct 5738 * 5739 * Description: This function is the job router for the adapter reset job. 5740 * 5741 * Return value: 5742 * none 5743 **/ 5744static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd) 5745{ 5746 u32 rc, ioasc; 5747 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5748 5749 do { 5750 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 5751 5752 if (ioa_cfg->reset_cmd != ipr_cmd) { 5753 /* 5754 * We are doing nested adapter resets and this is 5755 * not the current reset job. 5756 */ 5757 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5758 return; 5759 } 5760 5761 if (IPR_IOASC_SENSE_KEY(ioasc)) { 5762 rc = ipr_cmd->job_step_failed(ipr_cmd); 5763 if (rc == IPR_RC_JOB_RETURN) 5764 return; 5765 } 5766 5767 ipr_reinit_ipr_cmnd(ipr_cmd); 5768 ipr_cmd->job_step_failed = ipr_reset_cmd_failed; 5769 rc = ipr_cmd->job_step(ipr_cmd); 5770 } while(rc == IPR_RC_JOB_CONTINUE); 5771} 5772 5773/** 5774 * _ipr_initiate_ioa_reset - Initiate an adapter reset 5775 * @ioa_cfg: ioa config struct 5776 * @job_step: first job step of reset job 5777 * @shutdown_type: shutdown type 5778 * 5779 * Description: This function will initiate the reset of the given adapter 5780 * starting at the selected job step. 5781 * If the caller needs to wait on the completion of the reset, 5782 * the caller must sleep on the reset_wait_q. 5783 * 5784 * Return value: 5785 * none 5786 **/ 5787static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 5788 int (*job_step) (struct ipr_cmnd *), 5789 enum ipr_shutdown_type shutdown_type) 5790{ 5791 struct ipr_cmnd *ipr_cmd; 5792 5793 ioa_cfg->in_reset_reload = 1; 5794 ioa_cfg->allow_cmds = 0; 5795 scsi_block_requests(ioa_cfg->host); 5796 5797 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 5798 ioa_cfg->reset_cmd = ipr_cmd; 5799 ipr_cmd->job_step = job_step; 5800 ipr_cmd->u.shutdown_type = shutdown_type; 5801 5802 ipr_reset_ioa_job(ipr_cmd); 5803} 5804 5805/** 5806 * ipr_initiate_ioa_reset - Initiate an adapter reset 5807 * @ioa_cfg: ioa config struct 5808 * @shutdown_type: shutdown type 5809 * 5810 * Description: This function will initiate the reset of the given adapter. 5811 * If the caller needs to wait on the completion of the reset, 5812 * the caller must sleep on the reset_wait_q. 5813 * 5814 * Return value: 5815 * none 5816 **/ 5817static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 5818 enum ipr_shutdown_type shutdown_type) 5819{ 5820 if (ioa_cfg->ioa_is_dead) 5821 return; 5822 5823 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP) 5824 ioa_cfg->sdt_state = ABORT_DUMP; 5825 5826 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) { 5827 dev_err(&ioa_cfg->pdev->dev, 5828 "IOA taken offline - error recovery failed\n"); 5829 5830 ioa_cfg->reset_retries = 0; 5831 ioa_cfg->ioa_is_dead = 1; 5832 5833 if (ioa_cfg->in_ioa_bringdown) { 5834 ioa_cfg->reset_cmd = NULL; 5835 ioa_cfg->in_reset_reload = 0; 5836 ipr_fail_all_ops(ioa_cfg); 5837 wake_up_all(&ioa_cfg->reset_wait_q); 5838 5839 spin_unlock_irq(ioa_cfg->host->host_lock); 5840 scsi_unblock_requests(ioa_cfg->host); 5841 spin_lock_irq(ioa_cfg->host->host_lock); 5842 return; 5843 } else { 5844 ioa_cfg->in_ioa_bringdown = 1; 5845 shutdown_type = IPR_SHUTDOWN_NONE; 5846 } 5847 } 5848 5849 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa, 5850 shutdown_type); 5851} 5852 5853/** 5854 * ipr_reset_freeze - Hold off all I/O activity 5855 * @ipr_cmd: ipr command struct 5856 * 5857 * Description: If the PCI slot is frozen, hold off all I/O 5858 * activity; then, as soon as the slot is available again, 5859 * initiate an adapter reset. 5860 */ 5861static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd) 5862{ 5863 /* Disallow new interrupts, avoid loop */ 5864 ipr_cmd->ioa_cfg->allow_interrupts = 0; 5865 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q); 5866 ipr_cmd->done = ipr_reset_ioa_job; 5867 return IPR_RC_JOB_RETURN; 5868} 5869 5870/** 5871 * ipr_pci_frozen - Called when slot has experienced a PCI bus error. 5872 * @pdev: PCI device struct 5873 * 5874 * Description: This routine is called to tell us that the PCI bus 5875 * is down. Can't do anything here, except put the device driver 5876 * into a holding pattern, waiting for the PCI bus to come back. 5877 */ 5878static void ipr_pci_frozen(struct pci_dev *pdev) 5879{ 5880 unsigned long flags = 0; 5881 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 5882 5883 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 5884 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE); 5885 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 5886} 5887 5888/** 5889 * ipr_pci_slot_reset - Called when PCI slot has been reset. 5890 * @pdev: PCI device struct 5891 * 5892 * Description: This routine is called by the pci error recovery 5893 * code after the PCI slot has been reset, just before we 5894 * should resume normal operations. 5895 */ 5896static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev) 5897{ 5898 unsigned long flags = 0; 5899 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 5900 5901 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 5902 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space, 5903 IPR_SHUTDOWN_NONE); 5904 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 5905 return PCI_ERS_RESULT_RECOVERED; 5906} 5907 5908/** 5909 * ipr_pci_perm_failure - Called when PCI slot is dead for good. 5910 * @pdev: PCI device struct 5911 * 5912 * Description: This routine is called when the PCI bus has 5913 * permanently failed. 5914 */ 5915static void ipr_pci_perm_failure(struct pci_dev *pdev) 5916{ 5917 unsigned long flags = 0; 5918 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 5919 5920 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 5921 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 5922 ioa_cfg->sdt_state = ABORT_DUMP; 5923 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES; 5924 ioa_cfg->in_ioa_bringdown = 1; 5925 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 5926 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 5927} 5928 5929/** 5930 * ipr_pci_error_detected - Called when a PCI error is detected. 5931 * @pdev: PCI device struct 5932 * @state: PCI channel state 5933 * 5934 * Description: Called when a PCI error is detected. 5935 * 5936 * Return value: 5937 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT 5938 */ 5939static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev, 5940 pci_channel_state_t state) 5941{ 5942 switch (state) { 5943 case pci_channel_io_frozen: 5944 ipr_pci_frozen(pdev); 5945 return PCI_ERS_RESULT_NEED_RESET; 5946 case pci_channel_io_perm_failure: 5947 ipr_pci_perm_failure(pdev); 5948 return PCI_ERS_RESULT_DISCONNECT; 5949 break; 5950 default: 5951 break; 5952 } 5953 return PCI_ERS_RESULT_NEED_RESET; 5954} 5955 5956/** 5957 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..) 5958 * @ioa_cfg: ioa cfg struct 5959 * 5960 * Description: This is the second phase of adapter intialization 5961 * This function takes care of initilizing the adapter to the point 5962 * where it can accept new commands. 5963 5964 * Return value: 5965 * 0 on sucess / -EIO on failure 5966 **/ 5967static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg) 5968{ 5969 int rc = 0; 5970 unsigned long host_lock_flags = 0; 5971 5972 ENTER; 5973 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 5974 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg); 5975 if (ioa_cfg->needs_hard_reset) { 5976 ioa_cfg->needs_hard_reset = 0; 5977 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 5978 } else 5979 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa, 5980 IPR_SHUTDOWN_NONE); 5981 5982 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 5983 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 5984 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 5985 5986 if (ioa_cfg->ioa_is_dead) { 5987 rc = -EIO; 5988 } else if (ipr_invalid_adapter(ioa_cfg)) { 5989 if (!ipr_testmode) 5990 rc = -EIO; 5991 5992 dev_err(&ioa_cfg->pdev->dev, 5993 "Adapter not supported in this hardware configuration.\n"); 5994 } 5995 5996 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 5997 5998 LEAVE; 5999 return rc; 6000} 6001 6002/** 6003 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter 6004 * @ioa_cfg: ioa config struct 6005 * 6006 * Return value: 6007 * none 6008 **/ 6009static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 6010{ 6011 int i; 6012 6013 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 6014 if (ioa_cfg->ipr_cmnd_list[i]) 6015 pci_pool_free(ioa_cfg->ipr_cmd_pool, 6016 ioa_cfg->ipr_cmnd_list[i], 6017 ioa_cfg->ipr_cmnd_list_dma[i]); 6018 6019 ioa_cfg->ipr_cmnd_list[i] = NULL; 6020 } 6021 6022 if (ioa_cfg->ipr_cmd_pool) 6023 pci_pool_destroy (ioa_cfg->ipr_cmd_pool); 6024 6025 ioa_cfg->ipr_cmd_pool = NULL; 6026} 6027 6028/** 6029 * ipr_free_mem - Frees memory allocated for an adapter 6030 * @ioa_cfg: ioa cfg struct 6031 * 6032 * Return value: 6033 * nothing 6034 **/ 6035static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg) 6036{ 6037 int i; 6038 6039 kfree(ioa_cfg->res_entries); 6040 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs), 6041 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 6042 ipr_free_cmd_blks(ioa_cfg); 6043 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, 6044 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); 6045 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table), 6046 ioa_cfg->cfg_table, 6047 ioa_cfg->cfg_table_dma); 6048 6049 for (i = 0; i < IPR_NUM_HCAMS; i++) { 6050 pci_free_consistent(ioa_cfg->pdev, 6051 sizeof(struct ipr_hostrcb), 6052 ioa_cfg->hostrcb[i], 6053 ioa_cfg->hostrcb_dma[i]); 6054 } 6055 6056 ipr_free_dump(ioa_cfg); 6057 kfree(ioa_cfg->trace); 6058} 6059 6060/** 6061 * ipr_free_all_resources - Free all allocated resources for an adapter. 6062 * @ipr_cmd: ipr command struct 6063 * 6064 * This function frees all allocated resources for the 6065 * specified adapter. 6066 * 6067 * Return value: 6068 * none 6069 **/ 6070static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg) 6071{ 6072 struct pci_dev *pdev = ioa_cfg->pdev; 6073 6074 ENTER; 6075 free_irq(pdev->irq, ioa_cfg); 6076 iounmap(ioa_cfg->hdw_dma_regs); 6077 pci_release_regions(pdev); 6078 ipr_free_mem(ioa_cfg); 6079 scsi_host_put(ioa_cfg->host); 6080 pci_disable_device(pdev); 6081 LEAVE; 6082} 6083 6084/** 6085 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter 6086 * @ioa_cfg: ioa config struct 6087 * 6088 * Return value: 6089 * 0 on success / -ENOMEM on allocation failure 6090 **/ 6091static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 6092{ 6093 struct ipr_cmnd *ipr_cmd; 6094 struct ipr_ioarcb *ioarcb; 6095 dma_addr_t dma_addr; 6096 int i; 6097 6098 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev, 6099 sizeof(struct ipr_cmnd), 8, 0); 6100 6101 if (!ioa_cfg->ipr_cmd_pool) 6102 return -ENOMEM; 6103 6104 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 6105 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, SLAB_KERNEL, &dma_addr); 6106 6107 if (!ipr_cmd) { 6108 ipr_free_cmd_blks(ioa_cfg); 6109 return -ENOMEM; 6110 } 6111 6112 memset(ipr_cmd, 0, sizeof(*ipr_cmd)); 6113 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd; 6114 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr; 6115 6116 ioarcb = &ipr_cmd->ioarcb; 6117 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr); 6118 ioarcb->host_response_handle = cpu_to_be32(i << 2); 6119 ioarcb->write_ioadl_addr = 6120 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl)); 6121 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 6122 ioarcb->ioasa_host_pci_addr = 6123 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa)); 6124 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa)); 6125 ipr_cmd->cmd_index = i; 6126 ipr_cmd->ioa_cfg = ioa_cfg; 6127 ipr_cmd->sense_buffer_dma = dma_addr + 6128 offsetof(struct ipr_cmnd, sense_buffer); 6129 6130 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 6131 } 6132 6133 return 0; 6134} 6135 6136/** 6137 * ipr_alloc_mem - Allocate memory for an adapter 6138 * @ioa_cfg: ioa config struct 6139 * 6140 * Return value: 6141 * 0 on success / non-zero for error 6142 **/ 6143static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg) 6144{ 6145 struct pci_dev *pdev = ioa_cfg->pdev; 6146 int i, rc = -ENOMEM; 6147 6148 ENTER; 6149 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) * 6150 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL); 6151 6152 if (!ioa_cfg->res_entries) 6153 goto out; 6154 6155 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++) 6156 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q); 6157 6158 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev, 6159 sizeof(struct ipr_misc_cbs), 6160 &ioa_cfg->vpd_cbs_dma); 6161 6162 if (!ioa_cfg->vpd_cbs) 6163 goto out_free_res_entries; 6164 6165 if (ipr_alloc_cmd_blks(ioa_cfg)) 6166 goto out_free_vpd_cbs; 6167 6168 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev, 6169 sizeof(u32) * IPR_NUM_CMD_BLKS, 6170 &ioa_cfg->host_rrq_dma); 6171 6172 if (!ioa_cfg->host_rrq) 6173 goto out_ipr_free_cmd_blocks; 6174 6175 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev, 6176 sizeof(struct ipr_config_table), 6177 &ioa_cfg->cfg_table_dma); 6178 6179 if (!ioa_cfg->cfg_table) 6180 goto out_free_host_rrq; 6181 6182 for (i = 0; i < IPR_NUM_HCAMS; i++) { 6183 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev, 6184 sizeof(struct ipr_hostrcb), 6185 &ioa_cfg->hostrcb_dma[i]); 6186 6187 if (!ioa_cfg->hostrcb[i]) 6188 goto out_free_hostrcb_dma; 6189 6190 ioa_cfg->hostrcb[i]->hostrcb_dma = 6191 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam); 6192 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q); 6193 } 6194 6195 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) * 6196 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL); 6197 6198 if (!ioa_cfg->trace) 6199 goto out_free_hostrcb_dma; 6200 6201 rc = 0; 6202out: 6203 LEAVE; 6204 return rc; 6205 6206out_free_hostrcb_dma: 6207 while (i-- > 0) { 6208 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb), 6209 ioa_cfg->hostrcb[i], 6210 ioa_cfg->hostrcb_dma[i]); 6211 } 6212 pci_free_consistent(pdev, sizeof(struct ipr_config_table), 6213 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma); 6214out_free_host_rrq: 6215 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, 6216 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); 6217out_ipr_free_cmd_blocks: 6218 ipr_free_cmd_blks(ioa_cfg); 6219out_free_vpd_cbs: 6220 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs), 6221 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 6222out_free_res_entries: 6223 kfree(ioa_cfg->res_entries); 6224 goto out; 6225} 6226 6227/** 6228 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values 6229 * @ioa_cfg: ioa config struct 6230 * 6231 * Return value: 6232 * none 6233 **/ 6234static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg) 6235{ 6236 int i; 6237 6238 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 6239 ioa_cfg->bus_attr[i].bus = i; 6240 ioa_cfg->bus_attr[i].qas_enabled = 0; 6241 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH; 6242 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds)) 6243 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed]; 6244 else 6245 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE; 6246 } 6247} 6248 6249/** 6250 * ipr_init_ioa_cfg - Initialize IOA config struct 6251 * @ioa_cfg: ioa config struct 6252 * @host: scsi host struct 6253 * @pdev: PCI dev struct 6254 * 6255 * Return value: 6256 * none 6257 **/ 6258static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg, 6259 struct Scsi_Host *host, struct pci_dev *pdev) 6260{ 6261 const struct ipr_interrupt_offsets *p; 6262 struct ipr_interrupts *t; 6263 void __iomem *base; 6264 6265 ioa_cfg->host = host; 6266 ioa_cfg->pdev = pdev; 6267 ioa_cfg->log_level = ipr_log_level; 6268 ioa_cfg->doorbell = IPR_DOORBELL; 6269 if (!ipr_auto_create) 6270 ioa_cfg->doorbell |= IPR_RUNTIME_RESET; 6271 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER); 6272 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL); 6273 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL); 6274 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL); 6275 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START); 6276 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL); 6277 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL); 6278 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL); 6279 6280 INIT_LIST_HEAD(&ioa_cfg->free_q); 6281 INIT_LIST_HEAD(&ioa_cfg->pending_q); 6282 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q); 6283 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q); 6284 INIT_LIST_HEAD(&ioa_cfg->free_res_q); 6285 INIT_LIST_HEAD(&ioa_cfg->used_res_q); 6286 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread, ioa_cfg); 6287 init_waitqueue_head(&ioa_cfg->reset_wait_q); 6288 ioa_cfg->sdt_state = INACTIVE; 6289 if (ipr_enable_cache) 6290 ioa_cfg->cache_state = CACHE_ENABLED; 6291 else 6292 ioa_cfg->cache_state = CACHE_DISABLED; 6293 6294 ipr_initialize_bus_attr(ioa_cfg); 6295 6296 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS; 6297 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET; 6298 host->max_channel = IPR_MAX_BUS_TO_SCAN; 6299 host->unique_id = host->host_no; 6300 host->max_cmd_len = IPR_MAX_CDB_LEN; 6301 pci_set_drvdata(pdev, ioa_cfg); 6302 6303 p = &ioa_cfg->chip_cfg->regs; 6304 t = &ioa_cfg->regs; 6305 base = ioa_cfg->hdw_dma_regs; 6306 6307 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg; 6308 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg; 6309 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg; 6310 t->clr_interrupt_reg = base + p->clr_interrupt_reg; 6311 t->sense_interrupt_reg = base + p->sense_interrupt_reg; 6312 t->ioarrin_reg = base + p->ioarrin_reg; 6313 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg; 6314 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg; 6315 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg; 6316} 6317 6318/** 6319 * ipr_get_chip_cfg - Find adapter chip configuration 6320 * @dev_id: PCI device id struct 6321 * 6322 * Return value: 6323 * ptr to chip config on success / NULL on failure 6324 **/ 6325static const struct ipr_chip_cfg_t * __devinit 6326ipr_get_chip_cfg(const struct pci_device_id *dev_id) 6327{ 6328 int i; 6329 6330 if (dev_id->driver_data) 6331 return (const struct ipr_chip_cfg_t *)dev_id->driver_data; 6332 6333 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++) 6334 if (ipr_chip[i].vendor == dev_id->vendor && 6335 ipr_chip[i].device == dev_id->device) 6336 return ipr_chip[i].cfg; 6337 return NULL; 6338} 6339 6340/** 6341 * ipr_probe_ioa - Allocates memory and does first stage of initialization 6342 * @pdev: PCI device struct 6343 * @dev_id: PCI device id struct 6344 * 6345 * Return value: 6346 * 0 on success / non-zero on failure 6347 **/ 6348static int __devinit ipr_probe_ioa(struct pci_dev *pdev, 6349 const struct pci_device_id *dev_id) 6350{ 6351 struct ipr_ioa_cfg *ioa_cfg; 6352 struct Scsi_Host *host; 6353 unsigned long ipr_regs_pci; 6354 void __iomem *ipr_regs; 6355 u32 rc = PCIBIOS_SUCCESSFUL; 6356 volatile u32 mask, uproc; 6357 6358 ENTER; 6359 6360 if ((rc = pci_enable_device(pdev))) { 6361 dev_err(&pdev->dev, "Cannot enable adapter\n"); 6362 goto out; 6363 } 6364 6365 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq); 6366 6367 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg)); 6368 6369 if (!host) { 6370 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n"); 6371 rc = -ENOMEM; 6372 goto out_disable; 6373 } 6374 6375 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata; 6376 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg)); 6377 6378 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id); 6379 6380 if (!ioa_cfg->chip_cfg) { 6381 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n", 6382 dev_id->vendor, dev_id->device); 6383 goto out_scsi_host_put; 6384 } 6385 6386 ipr_regs_pci = pci_resource_start(pdev, 0); 6387 6388 rc = pci_request_regions(pdev, IPR_NAME); 6389 if (rc < 0) { 6390 dev_err(&pdev->dev, 6391 "Couldn't register memory range of registers\n"); 6392 goto out_scsi_host_put; 6393 } 6394 6395 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0)); 6396 6397 if (!ipr_regs) { 6398 dev_err(&pdev->dev, 6399 "Couldn't map memory range of registers\n"); 6400 rc = -ENOMEM; 6401 goto out_release_regions; 6402 } 6403 6404 ioa_cfg->hdw_dma_regs = ipr_regs; 6405 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci; 6406 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs; 6407 6408 ipr_init_ioa_cfg(ioa_cfg, host, pdev); 6409 6410 pci_set_master(pdev); 6411 6412 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK); 6413 if (rc < 0) { 6414 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n"); 6415 goto cleanup_nomem; 6416 } 6417 6418 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 6419 ioa_cfg->chip_cfg->cache_line_size); 6420 6421 if (rc != PCIBIOS_SUCCESSFUL) { 6422 dev_err(&pdev->dev, "Write of cache line size failed\n"); 6423 rc = -EIO; 6424 goto cleanup_nomem; 6425 } 6426 6427 /* Save away PCI config space for use following IOA reset */ 6428 rc = pci_save_state(pdev); 6429 6430 if (rc != PCIBIOS_SUCCESSFUL) { 6431 dev_err(&pdev->dev, "Failed to save PCI config space\n"); 6432 rc = -EIO; 6433 goto cleanup_nomem; 6434 } 6435 6436 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg))) 6437 goto cleanup_nomem; 6438 6439 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg))) 6440 goto cleanup_nomem; 6441 6442 rc = ipr_alloc_mem(ioa_cfg); 6443 if (rc < 0) { 6444 dev_err(&pdev->dev, 6445 "Couldn't allocate enough memory for device driver!\n"); 6446 goto cleanup_nomem; 6447 } 6448 6449 /* 6450 * If HRRQ updated interrupt is not masked, or reset alert is set, 6451 * the card is in an unknown state and needs a hard reset 6452 */ 6453 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 6454 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg); 6455 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT)) 6456 ioa_cfg->needs_hard_reset = 1; 6457 6458 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 6459 rc = request_irq(pdev->irq, ipr_isr, IRQF_SHARED, IPR_NAME, ioa_cfg); 6460 6461 if (rc) { 6462 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n", 6463 pdev->irq, rc); 6464 goto cleanup_nolog; 6465 } 6466 6467 spin_lock(&ipr_driver_lock); 6468 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head); 6469 spin_unlock(&ipr_driver_lock); 6470 6471 LEAVE; 6472out: 6473 return rc; 6474 6475cleanup_nolog: 6476 ipr_free_mem(ioa_cfg); 6477cleanup_nomem: 6478 iounmap(ipr_regs); 6479out_release_regions: 6480 pci_release_regions(pdev); 6481out_scsi_host_put: 6482 scsi_host_put(host); 6483out_disable: 6484 pci_disable_device(pdev); 6485 goto out; 6486} 6487 6488/** 6489 * ipr_scan_vsets - Scans for VSET devices 6490 * @ioa_cfg: ioa config struct 6491 * 6492 * Description: Since the VSET resources do not follow SAM in that we can have 6493 * sparse LUNs with no LUN 0, we have to scan for these ourselves. 6494 * 6495 * Return value: 6496 * none 6497 **/ 6498static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg) 6499{ 6500 int target, lun; 6501 6502 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++) 6503 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ ) 6504 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun); 6505} 6506 6507/** 6508 * ipr_initiate_ioa_bringdown - Bring down an adapter 6509 * @ioa_cfg: ioa config struct 6510 * @shutdown_type: shutdown type 6511 * 6512 * Description: This function will initiate bringing down the adapter. 6513 * This consists of issuing an IOA shutdown to the adapter 6514 * to flush the cache, and running BIST. 6515 * If the caller needs to wait on the completion of the reset, 6516 * the caller must sleep on the reset_wait_q. 6517 * 6518 * Return value: 6519 * none 6520 **/ 6521static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg, 6522 enum ipr_shutdown_type shutdown_type) 6523{ 6524 ENTER; 6525 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 6526 ioa_cfg->sdt_state = ABORT_DUMP; 6527 ioa_cfg->reset_retries = 0; 6528 ioa_cfg->in_ioa_bringdown = 1; 6529 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); 6530 LEAVE; 6531} 6532 6533/** 6534 * __ipr_remove - Remove a single adapter 6535 * @pdev: pci device struct 6536 * 6537 * Adapter hot plug remove entry point. 6538 * 6539 * Return value: 6540 * none 6541 **/ 6542static void __ipr_remove(struct pci_dev *pdev) 6543{ 6544 unsigned long host_lock_flags = 0; 6545 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 6546 ENTER; 6547 6548 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 6549 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); 6550 6551 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 6552 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 6553 flush_scheduled_work(); 6554 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 6555 6556 spin_lock(&ipr_driver_lock); 6557 list_del(&ioa_cfg->queue); 6558 spin_unlock(&ipr_driver_lock); 6559 6560 if (ioa_cfg->sdt_state == ABORT_DUMP) 6561 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 6562 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 6563 6564 ipr_free_all_resources(ioa_cfg); 6565 6566 LEAVE; 6567} 6568 6569/** 6570 * ipr_remove - IOA hot plug remove entry point 6571 * @pdev: pci device struct 6572 * 6573 * Adapter hot plug remove entry point. 6574 * 6575 * Return value: 6576 * none 6577 **/ 6578static void ipr_remove(struct pci_dev *pdev) 6579{ 6580 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 6581 6582 ENTER; 6583 6584 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj, 6585 &ipr_trace_attr); 6586 ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj, 6587 &ipr_dump_attr); 6588 scsi_remove_host(ioa_cfg->host); 6589 6590 __ipr_remove(pdev); 6591 6592 LEAVE; 6593} 6594 6595/** 6596 * ipr_probe - Adapter hot plug add entry point 6597 * 6598 * Return value: 6599 * 0 on success / non-zero on failure 6600 **/ 6601static int __devinit ipr_probe(struct pci_dev *pdev, 6602 const struct pci_device_id *dev_id) 6603{ 6604 struct ipr_ioa_cfg *ioa_cfg; 6605 int rc; 6606 6607 rc = ipr_probe_ioa(pdev, dev_id); 6608 6609 if (rc) 6610 return rc; 6611 6612 ioa_cfg = pci_get_drvdata(pdev); 6613 rc = ipr_probe_ioa_part2(ioa_cfg); 6614 6615 if (rc) { 6616 __ipr_remove(pdev); 6617 return rc; 6618 } 6619 6620 rc = scsi_add_host(ioa_cfg->host, &pdev->dev); 6621 6622 if (rc) { 6623 __ipr_remove(pdev); 6624 return rc; 6625 } 6626 6627 rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj, 6628 &ipr_trace_attr); 6629 6630 if (rc) { 6631 scsi_remove_host(ioa_cfg->host); 6632 __ipr_remove(pdev); 6633 return rc; 6634 } 6635 6636 rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj, 6637 &ipr_dump_attr); 6638 6639 if (rc) { 6640 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj, 6641 &ipr_trace_attr); 6642 scsi_remove_host(ioa_cfg->host); 6643 __ipr_remove(pdev); 6644 return rc; 6645 } 6646 6647 scsi_scan_host(ioa_cfg->host); 6648 ipr_scan_vsets(ioa_cfg); 6649 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN); 6650 ioa_cfg->allow_ml_add_del = 1; 6651 ioa_cfg->host->max_channel = IPR_VSET_BUS; 6652 schedule_work(&ioa_cfg->work_q); 6653 return 0; 6654} 6655 6656/** 6657 * ipr_shutdown - Shutdown handler. 6658 * @pdev: pci device struct 6659 * 6660 * This function is invoked upon system shutdown/reboot. It will issue 6661 * an adapter shutdown to the adapter to flush the write cache. 6662 * 6663 * Return value: 6664 * none 6665 **/ 6666static void ipr_shutdown(struct pci_dev *pdev) 6667{ 6668 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 6669 unsigned long lock_flags = 0; 6670 6671 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 6672 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); 6673 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 6674 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 6675} 6676 6677static struct pci_device_id ipr_pci_table[] __devinitdata = { 6678 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 6679 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 6680 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 6681 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 6682 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 6683 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 6684 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 6685 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 6686 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 6687 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 6688 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 6689 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 6690 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 6691 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 6692 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 6693 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 6694 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 6695 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 6696 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 6697 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 6698 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 6699 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 6700 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 6701 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 6702 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 6703 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 6704 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 6705 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 6706 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 6707 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 6708 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 6709 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 6710 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 6711 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 6712 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 6713 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, 6714 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, 6715 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 6716 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] }, 6717 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 6718 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 6719 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] }, 6720 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 6721 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 6722 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] }, 6723 { } 6724}; 6725MODULE_DEVICE_TABLE(pci, ipr_pci_table); 6726 6727static struct pci_error_handlers ipr_err_handler = { 6728 .error_detected = ipr_pci_error_detected, 6729 .slot_reset = ipr_pci_slot_reset, 6730}; 6731 6732static struct pci_driver ipr_driver = { 6733 .name = IPR_NAME, 6734 .id_table = ipr_pci_table, 6735 .probe = ipr_probe, 6736 .remove = ipr_remove, 6737 .shutdown = ipr_shutdown, 6738 .err_handler = &ipr_err_handler, 6739}; 6740 6741/** 6742 * ipr_init - Module entry point 6743 * 6744 * Return value: 6745 * 0 on success / negative value on failure 6746 **/ 6747static int __init ipr_init(void) 6748{ 6749 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n", 6750 IPR_DRIVER_VERSION, IPR_DRIVER_DATE); 6751 6752 return pci_module_init(&ipr_driver); 6753} 6754 6755/** 6756 * ipr_exit - Module unload 6757 * 6758 * Module unload entry point. 6759 * 6760 * Return value: 6761 * none 6762 **/ 6763static void __exit ipr_exit(void) 6764{ 6765 pci_unregister_driver(&ipr_driver); 6766} 6767 6768module_init(ipr_init); 6769module_exit(ipr_exit); 6770